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

128421 (number)

128421 is an odd 6-digits composite number following 128420 and preceding 128422. In scientific notation, it is written as 1.28421 × 10^5. The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors. There are 81000 positive integers (up to 128421) that are relatively prime to 128421.

Interesting facts

128421 has 8 divisors, whose sum is 150400
The reverse of 128421 is 124821
Previous prime number is 19

Basic properties

Is Prime? no
Number parity odd
Number length 6
Sum of Digits 18
Digital Root 9

Name

Name	one hundred twenty-eight thousand four hundred twenty-one

Notation

Scientific notation	1.28421 × 10^5
Engineering notation	1.28421 × 10^3

Prime Factorization of 128421

Prime Factorization 9 × 19 × 751

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	128421	Product of the distinct prime numbers

The prime factorization of 128421 is 9 × 19 × 751. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 1, 64, 36, 125, 141, 9992, 4714, 79777, 36959, 822323, 405734, 2073276, 5660692, 23280847, 70031145, 880481658, 638374142, 4310673969, 3374681830

Basic calculations (n = 128421)

Multiplication

n×y

n×2	256842
n×3	385263
n×4	513684
n×5	642105

Division

n÷y

n÷2	64210.5
n÷3	42807
n÷3	32105.25
n÷5	25684.2

Exponentiation

n^y

n²	16491953241
n³	2117913127162461
n⁴	2.7198452170333E+20
n⁵	3.4928524261663E+25

Nth Root

^y√n

²√n	358.35875878789
³√n	50.452034317327
⁴√n	18.930366050024
⁵√n	10.513013194451

Divisors of 128421

1, 9, 19, 171, 751, 6759, 14269, 128421

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	-128420	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 128421 can be divided by 8 positive divisors. The sum of these divisors (counting 128421) is 1, the average is 0.125.

Base conversion 128421

Base	System	Value
2	Binary	11111010110100101
3	Ternary	20112011100
4	Quaternary	133112211
5	Quinary	13102141
6	Senary	2430313
8	Octal	372645
10	Decimal	128421
12	Duodecimal	62399
16	Hexadecimal	1f5a5
20	Vigesimal	g111
36	Base36	2r39

Cryptographic Hash Functions

md5	003c52cf1a4890843fc8c85c6c64846d
sha1	258d8e03a985c21a54a1ffdf9d47a924aa73a8da
sha256	5ef5ccf94089c7f01b8ac18deeb638b9492093372ec68aef66158cb789f4b945
sha512	dfdb057edcc038dfca0e21767bc7f8bf7f1f497818520c15bce22751ef7118eb3027a63a436d8e8d8297964cb62f7e131d0c5e795a079687f405d492a1b2a717
ripemd-160	616ed334eed2e2eb389dd8e51d766ca60f3f5ae3

128421 as geometric shapes

Circle

Radius = n

Diameter	256842
Circumference	806892.94033331
Area	51810999145.272

Sphere

Radius = n

Volume	8.8714937616466E+15
Surface area	207243996581.09
Circumference	806892.94033331

Square

Length = n

Perimeter	513684
Area	16491953241
Diagonal	181614.71989352

Cube

Length = n

Surface area	98951719446
Volume	2117913127162461
Space diagonal	222431.6967588

Equilateral Triangle

Length = n

Perimeter	385263
Area	7141225232.3656
Altitude	111215.8483794

Triangular Pyramid

Length = n

Surface area	7141225232.3656
Volume	2.4959845569676E+14
Height	60538.239964505