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

81243742 (number)

81243742 is an even 8-digits composite number following 81243741 and preceding 81243743. In scientific notation, it is written as 8.1243742 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 40621870 positive integers (up to 81243742) that are relatively prime to 81243742.

Interesting facts

81243742 has 4 divisors, whose sum is 121865616
The reverse of 81243742 is 24734218
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	eighty-one million two hundred forty-three thousand seven hundred forty-two

Notation

Scientific notation	8.1243742 × 10^7
Engineering notation	8.1243742 × 10^6

Prime Factorization of 81243742

Prime Factorization 2 × 40621871

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81243742	Product of the distinct prime numbers

The prime factorization of 81243742 is 2 × 40621871. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 9, 14, 75, 210, 367, 8462, 9000, 5237, 52710, 748829, 934656, 9377776, 5702176, 17238697, 48885, 225436047, 569301129, 5443126078, 5494855176

Basic calculations (n = 81243742)

Multiplication

n×y

n×2	162487484
n×3	243731226
n×4	324974968
n×5	406218710

Division

n÷y

n÷2	40621871
n÷3	27081247.333333
n÷3	20310935.5
n÷5	16248748.4

Exponentiation

n^y

n²	6600545614162564
n³	5.3625302493625E+23
n⁴	4.3567202404641E+31
n⁵	3.5395625518244E+39

Nth Root

^y√n

²√n	9013.5310505928
³√n	433.10843254019
⁴√n	94.939617918932
⁵√n	38.190732097724

Divisors of 81243742

1, 2, 40621871, 81243742

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81243741	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81243742 can be divided by 4 positive divisors. The sum of these divisors (counting 81243742) is 1, the average is 0.25.

Base conversion 81243742

Base	System	Value
2	Binary	100110101111010111001011110
3	Ternary	12122212121110111
4	Quaternary	10311322321132
5	Quinary	131244244432
6	Senary	12021200234
8	Octal	465727136
10	Decimal	81243742
12	Duodecimal	2326007a
16	Hexadecimal	4d7ae5e
20	Vigesimal	157f972
36	Base36	1cdc2m

Cryptographic Hash Functions

md5	f7798e6f70336d1496d451116729c42b
sha1	a778114581002035d4e893c5afa8a95bc5ccd089
sha256	d9dad8731cd0400dc81a01334235a8085f9ccb4646e9cc388301e4aa1135621f
sha512	b3916a09a9dd31505d173e1df3a0251f07b5076a92a4f7c30521d4796b5135dad3d1bb03dbbbc6edfe7a16ef5c1d38009ce2df3d6de0534981a6cdfb3b9dcdf3
ripemd-160	24e5df62add187455b67d1ab47065fd3799913d7

81243742 as geometric shapes

Circle

Radius = n

Diameter	162487484
Circumference	510469486.03469
Area	2.0736225611137E+16

Sphere

Radius = n

Volume	2.2462514181401E+24
Surface area	8.294490244455E+16
Circumference	510469486.03469

Square

Length = n

Perimeter	324974968
Area	6600545614162564
Diagonal	114896001.79434

Cube

Length = n

Surface area	39603273684975384
Volume	5.3625302493625E+23
Space diagonal	140718288.94102

Equilateral Triangle

Length = n

Perimeter	243731226
Area	2.8581200903514E+15
Altitude	70359144.470509

Triangular Pyramid

Length = n

Surface area	2.8581200903514E+15
Volume	6.3198025060704E+22
Height	38298667.26478