21105842 is an even 8-digits composite number following 21105841
and preceding 21105843 . In scientific notation, it is written as 2.1105842 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 10444032 positive integers (up to 21105842) that are relatively prime to 21105842.
21105842 has 8 divisors, whose sum is 31985436
The reverse of 21105842 is 24850112
Previous prime number is 97
Is Prime? no
Number parity even
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million one hundred five thousand eight hundred forty-two
Scientific notation
2.1105842 × 10^7
Engineering notation
2.1105842 × 10^6
Prime Factorization
2 × 97 × 108793
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21105842
Product of the distinct prime numbers
The prime factorization of 21105842 is 2 × 97 × 108793.
Since it has a total of 3 prime factors.
8 , 4 , 53 , 4 , 541 , 928 , 7011 , 3146 , 28069 , 96165 , 273234 , 16440 , 9968018 , 3325932 , 25367492 , 13571781 , 625906270 , 204476721 , 1382474237 , 1415688214
n×2
42211684
n×3
63317526
n×4
84423368
n×5
105529210
n÷2
10552921
n÷3
7035280.6666667
n÷3
5276460.5
n÷5
4221168.4
n2
445456566528964
n3
9.4017359110228E+21
n4
1.9843155266377E+29
n5
4.1880649983363E+36
2 √n
4594.1094893352
3 √n
276.35514912317
4 √n
67.779860499526
5 √n
29.166246137027
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
-21105841
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 21105842 can be divided by 8 positive divisors.
The sum of these divisors (counting 21105842) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100000110010110010
3
Ternary
1110201021202212
4
Quaternary
1100200302302
5
Quinary
20400341332
6
Senary
2032212122
8
Octal
120406262
10
Decimal
21105842
12
Duodecimal
709a042
16
Hexadecimal
1420cb2
20
Vigesimal
6bi4c2
36
Base36
ckdde
md5
c01d782ef556af2eb16a14f4e0bcd655
sha1
5fb393ed4dde1811609dad8a29ffdfd074863973
sha256
cd89a8779d6932a72e48fe4ba6e88c329c33abe713731065ff6a6d096b21052e
sha512
ee0b56410069b07e3a7b35f8010327263a722d30be6ecd7bc28b10fde549c46d735b2c3ac833c87d97268fccddba819a5689e1f8cc4d97014e614adeb4151710
ripemd-160
14c1adc7a4a9ead31b1e7c85c606be0ff36ac4fa
Diameter
42211684
Circumference
132611916.35005
Area
1.3994430769007E+15
Volume
3.9381899292081E+22
Surface area
5.5977723076029E+15
Circumference
132611916.35005
Perimeter
84423368
Area
445456566528964
Diagonal
29848168.001704
Surface area
2672739399173784
Volume
9.4017359110228E+21
Space diagonal
36556390.680521
Perimeter
63317526
Area
1.9288835144834E+14
Altitude
18278195.340261
Surface area
1.9288835144834E+14
Volume
1.1080052029349E+21
Height
9949389.3339012