Question: What is the sum of the prime factors of 42?

To find the prime factors of 42, we divide it by the smallest prime number, 2, resulting in 21. Next, we divide 21 by 3, which gives us 7. Thus, the prime factors of 42 are 2, 3, and 7. Adding them together, we get: 2 + 3 + 7 = 12. Therefore, the sum of the prime factors of 42 is 12.

What is the product of the prime factors of 42, excluding 42 itself?

The prime factors of 42 are 2, 3, and 7. Excluding 42, their product is 2 * 3 * 7 = 42.

Question: What is the sum of all even integers from 1 to 42 inclusive?

To find the sum of the even integers from 1 to 42, we can apply the arithmetic series formula. The first even number is 2, the last even number is 42, and the common difference is 2. Therefore, the number of terms in the sequence can be found by the formula (last term - first term)/common difference + 1. Plugging in the values, we get (42 - 2)/2 + 1 = 21 + 1 = 22. Now, we calculate the sum of this arithmetic series using the formula Sn = (n/2)(first term + last term). Plugging in the values, we get Sn = (22/2)(2 + 42) = 11(44) = 484. Hence, the sum of all even integers from 1 to 42 inclusive is 484.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

42 (number)

42 is an even 2-digits composite number following 41 and preceding 43. In scientific notation, it is written as 4.2 × 10^1. The sum of its digits is 6. It has a total of 3 prime factors and 8 positive divisors. There are 12 positive integers (up to 42) that are relatively prime to 42.

Interesting facts

42 has 8 divisors, whose sum is 96
The reverse of 42 is 24
Previous prime number is 3

Basic properties

Is Prime? no
Number parity even
Number length 2
Sum of Digits 6
Digital Root 6

Name

Name	forty-two

Notation

Scientific notation	4.2 × 10^1
Engineering notation	4.2 × 10^0

Prime Factorization of 42

Prime Factorization 2 × 3 × 7

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	42	Product of the distinct prime numbers

The prime factorization of 42 is 2 × 3 × 7. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 8, 22, 93, 880, 745, 213, 8861, 52513, 64472, 674700, 904408, 856286, 7695064, 23016623, 99735091, 594440225, 227590659, 9869302967, 5268969104

Basic calculations (n = 42)

Multiplication

n×y

n×2	84
n×3	126
n×4	168
n×5	210

Division

n÷y

n÷2	21
n÷3	14
n÷3	10.5
n÷5	8.4

Exponentiation

n^y

n²	1764
n³	74088
n⁴	3111696
n⁵	130691232

Nth Root

^y√n

²√n	6.4807406984079
³√n	3.4760266448864
⁴√n	2.5457298950218
⁵√n	2.1117857649668

Divisors of 42

1, 2, 3, 6, 7, 14, 21, 42

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-41	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 42 can be divided by 8 positive divisors. The sum of these divisors (counting 42) is 1, the average is 0.125.

Base conversion 42

Base	System	Value
2	Binary	101010
3	Ternary	1120
4	Quaternary	222
5	Quinary	132
6	Senary	110
8	Octal	52
10	Decimal	42
12	Duodecimal	36
16	Hexadecimal	2a
20	Vigesimal	22
36	Base36	16

Cryptographic Hash Functions

md5	a1d0c6e83f027327d8461063f4ac58a6
sha1	92cfceb39d57d914ed8b14d0e37643de0797ae56
sha256	73475cb40a568e8da8a045ced110137e159f890ac4da883b6b17dc651b3a8049
sha512	39ca7ce9ecc69f696bf7d20bb23dd1521b641f806cc7a6b724aaa6cdbffb3a023ff98ae73225156b2c6c9ceddbfc16f5453e8fa49fc10e5d96a3885546a46ef4
ripemd-160	0df020ba32aa9b8b904471ff582ce6b579bf8bc8

42 as geometric shapes

Circle

Radius = n

Diameter	84
Circumference	263.89378290154
Area	5541.7694409324

Sphere

Radius = n

Volume	310339.08869221
Surface area	22167.07776373
Circumference	263.89378290154

Square

Length = n

Perimeter	168
Area	1764
Diagonal	59.39696961967

Cube

Length = n

Surface area	10584
Volume	74088
Space diagonal	72.746133917893

Equilateral Triangle

Length = n

Perimeter	126
Area	763.83440613787
Altitude	36.373066958946

Triangular Pyramid

Length = n

Surface area	763.83440613787
Volume	8731.3545340915
Height	19.798989873223