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

81242021 (number)

81242021 is an odd 8-digits composite number following 81242020 and preceding 81242022. In scientific notation, it is written as 8.1242021 × 10^7. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 67234608 positive integers (up to 81242021) that are relatively prime to 81242021.

Interesting facts

81242021 has 8 divisors, whose sum is 96049920
The reverse of 81242021 is 12024218
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	eighty-one million two hundred forty-two thousand twenty-one

Notation

Scientific notation	8.1242021 × 10^7
Engineering notation	8.1242021 × 10^6

Prime Factorization of 81242021

Prime Factorization 29 × 7 × 400207

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81242021	Product of the distinct prime numbers

The prime factorization of 81242021 is 29 × 7 × 400207. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 6, 89, 86, 517, 85, 7977, 9028, 2510, 89462, 354717, 373092, 8148293, 9232708, 8061764, 23885443, 204297051, 306000180, 754908073, 7416756550

Basic calculations (n = 81242021)

Multiplication

n×y

n×2	162484042
n×3	243726063
n×4	324968084
n×5	406210105

Division

n÷y

n÷2	40621010.5
n÷3	27080673.666667
n÷3	20310505.25
n÷5	16248404.2

Exponentiation

n^y

n²	6600265976164441
n³	5.3621894704114E+23
n⁴	4.3563510956114E+31
n⁵	3.5391876719303E+39

Nth Root

^y√n

²√n	9013.4355825068
³√n	433.10537431541
⁴√n	94.939115134421
⁵√n	38.190570296199

Divisors of 81242021

1, 7, 29, 203, 400207, 2801449, 11606003, 81242021

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	-81242020	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 81242021 can be divided by 8 positive divisors. The sum of these divisors (counting 81242021) is 1, the average is 0.125.

Base conversion 81242021

Base	System	Value
2	Binary	100110101111010011110100101
3	Ternary	12122212112002202
4	Quaternary	10311322132211
5	Quinary	131244221041
6	Senary	12021144245
8	Octal	465723645
10	Decimal	81242021
12	Duodecimal	2325b085
16	Hexadecimal	4d7a7a5
20	Vigesimal	157f511
36	Base36	1cdaqt

Cryptographic Hash Functions

md5	f69505672b589345448e87ed3d5e92c8
sha1	2bbff2c91250bfab5e0072f4cb9a582b7ae487e0
sha256	a96b1b7a3a65e5cd1e3f591e7cc0da705edf0196dcfc04bd0a855585c6f3818b
sha512	c5d92a8509efbd18d3eeb00a0e01674a8def611bf0353a6db6b650fbfc8b07e100504000e2f0ce0a1a189b91c20053a976437cf458a3f462f60af7a3923d31a1
ripemd-160	53f985acd28a3dd9fc12c416668d911c64fc27e0

81242021 as geometric shapes

Circle

Radius = n

Diameter	162484042
Circumference	510458672.67278
Area	2.0735347102457E+16

Sphere

Radius = n

Volume	2.2461086729868E+24
Surface area	8.2941388409827E+16
Circumference	510458672.67278

Square

Length = n

Perimeter	324968084
Area	6600265976164441
Diagonal	114893567.9328

Cube

Length = n

Surface area	39601595856986646
Volume	5.3621894704114E+23
Space diagonal	140715308.08158

Equilateral Triangle

Length = n

Perimeter	243726063
Area	2.8579990035463E+15
Altitude	70357654.040789

Triangular Pyramid

Length = n

Surface area	2.8579990035463E+15
Volume	6.319400894225E+22
Height	38297855.9776