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

81421 (number)

81421 is an odd 5-digits prime number following 81420 and preceding 81422. In scientific notation, it is written as 8.1421 × 10^4. The sum of its digits is 16. It has a total of 1 prime factors and 2 positive divisors. There are 81420 positive integers (up to 81421) that are relatively prime to 81421.

Interesting facts

81421 has 2 divisors, whose sum is 81422
The reverse of 81421 is 12418
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 5
Sum of Digits 16
Digital Root 7

Name

Name	eighty-one thousand four hundred twenty-one

Notation

Scientific notation	8.1421 × 10^4
Engineering notation	8.1421 × 10^3

Prime Factorization of 81421

Prime Factorization 81421

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81421	Product of the distinct prime numbers

The prime factorization of 81421 is 81421. Since it has a total of 1 prime factors.

Most popular turbo-numbers

2, 5, 29, 62, 989, 297, 1546, 7035, 86702, 85164, 872619, 410407, 8161855, 4192256, 41051024, 77247559, 433003356, 346278156, 5345888653, 4862685739

Basic calculations (n = 81421)

Multiplication

n×y

n×2	162842
n×3	244263
n×4	325684
n×5	407105

Division

n÷y

n÷2	40710.5
n÷3	27140.333333333
n÷3	20355.25
n÷5	16284.2

Exponentiation

n^y

n²	6629379241
n³	539770687181461
n⁴	4.3948669121002E+19
n⁵	3.5783445885011E+24

Nth Root

^y√n

²√n	285.34365246138
³√n	43.34231897815
⁴√n	16.892118057289
⁵√n	9.5972605732174

Divisors of 81421

1, 81421

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81422	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40711	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	285.34540472908	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999754366142	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81421 can be divided by 2 positive divisors. The sum of these divisors (counting 81421) is 81422, the average is 40711.

Base conversion 81421

Base	System	Value
2	Binary	10011111000001101
3	Ternary	11010200121
4	Quaternary	103320031
5	Quinary	10101141
6	Senary	1424541
8	Octal	237015
10	Decimal	81421
12	Duodecimal	3b151
16	Hexadecimal	13e0d
20	Vigesimal	a3b1
36	Base36	1qtp

Cryptographic Hash Functions

md5	32ca885a1d6bfbd2a7098d84ca49038b
sha1	26b75241bff8b224f41bcf020f8cb416c2eb0fb6
sha256	7564c8b961c27ff25678057cc4fedfaa43c9e0c8a9198150e7e7d0ebf44dd06b
sha512	a4bb0132ebe88b5fe0eac300bde9c831176fe3aac3ccfb26f14674cf1835584e37234d9661508ff5f33188515fa4b97862e89a765f7c3c9b32b48fe377f8ac21
ripemd-160	3fe5a8d918d03e45fc14cefd501826ec7c198168

81421 as geometric shapes

Circle

Radius = n

Diameter	162842
Circumference	511583.23089587
Area	20826809121.386

Sphere

Radius = n

Volume	2.2609861672965E+15
Surface area	83307236485.545
Circumference	511583.23089587

Square

Length = n

Perimeter	325684
Area	6629379241
Diagonal	115146.68246198

Cube

Length = n

Surface area	39776275446
Volume	539770687181461
Space diagonal	141025.30880307

Equilateral Triangle

Length = n

Perimeter	244263
Area	2870605417.0136
Altitude	70512.654401533

Triangular Pyramid

Length = n

Surface area	2870605417.0136
Volume	63612585531956
Height	38382.227487327