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

129905 (number)

129905 is an odd 6-digits composite number following 129904 and preceding 129906. In scientific notation, it is written as 1.29905 × 10^5. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 103920 positive integers (up to 129905) that are relatively prime to 129905.

Interesting facts

129905 has 4 divisors, whose sum is 155892
The reverse of 129905 is 509921
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 6
Sum of Digits 26
Digital Root 8

Name

Name	one hundred twenty-nine thousand nine hundred five

Notation

Scientific notation	1.29905 × 10^5
Engineering notation	1.29905 × 10^3

Prime Factorization of 129905

Prime Factorization 5 × 25981

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	129905	Product of the distinct prime numbers

The prime factorization of 129905 is 5 × 25981. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 5, 17, 26, 789, 453, 4273, 6606, 78079, 27646, 667148, 732155, 1588386, 266311, 61376981, 40016761, 550995539, 891742341, 4083106198, 113070052

Basic calculations (n = 129905)

Multiplication

n×y

n×2	259810
n×3	389715
n×4	519620
n×5	649525

Division

n÷y

n÷2	64952.5
n÷3	43301.666666667
n÷3	32476.25
n÷5	25981

Exponentiation

n^y

n²	16875309025
n³	2192187018892625
n⁴	2.8477605468925E+20
n⁵	3.6993833384407E+25

Nth Root

^y√n

²√n	360.42336217288
³√n	50.645627421979
⁴√n	18.984819255734
⁵√n	10.537198792871

Divisors of 129905

1, 5, 25981, 129905

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	-129904	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 129905 can be divided by 4 positive divisors. The sum of these divisors (counting 129905) is 1, the average is 0.25.

Base conversion 129905

Base	System	Value
2	Binary	11111101101110001
3	Ternary	20121012022
4	Quaternary	133231301
5	Quinary	13124110
6	Senary	2441225
8	Octal	375561
10	Decimal	129905
12	Duodecimal	63215
16	Hexadecimal	1fb71
20	Vigesimal	g4f5
36	Base36	2s8h

Cryptographic Hash Functions

md5	793613b314855c3913d3c408253c12ae
sha1	a780724f34188390d4cef25089dc00579626828a
sha256	cb6e27b8151bf6c22364108e1a7455b2b97c1b16b1d1adbd9ea1c1176f040bfa
sha512	6db74f85913c81a4c8208f3ffe3da3590f4bd84ebc0c4859b72bcb636b7814691eb3b6c6993bb5f657652214e255f10c85736fd07aa51cc5083b124ce92b7878
ripemd-160	9d5c1402a418bd978ab38eed93973b0a4ecb491a

129905 as geometric shapes

Circle

Radius = n

Diameter	259810
Circumference	816217.18732916
Area	53015346859.998

Sphere

Radius = n

Volume	9.1826115117973E+15
Surface area	212061387439.99
Circumference	816217.18732916

Square

Length = n

Perimeter	519620
Area	16875309025
Diagonal	183713.41282008

Cube

Length = n

Surface area	101251854150
Volume	2192187018892625
Space diagonal	225002.06015723

Equilateral Triangle

Length = n

Perimeter	389715
Area	7307223156.1814
Altitude	112501.03007862

Triangular Pyramid

Length = n

Surface area	7307223156.1814
Volume	2.5835171778135E+14
Height	61237.804273359