21131421 is an odd 8-digits composite number following 21131420
and preceding 21131422 . In scientific notation, it is written as 2.1131421 × 10^7.
The sum of its digits is 15. It has a total of 2 prime factors and 4 positive divisors.
There are 14087612 positive integers (up to 21131421) that are relatively prime to 21131421.
21131421 has 4 divisors, whose sum is 28175232
The reverse of 21131421 is 12413112
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6
Name
twenty-one million one hundred thirty-one thousand four hundred twenty-one
Scientific notation
2.1131421 × 10^7
Engineering notation
2.1131421 × 10^6
Prime Factorization
3 × 7043807
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21131421
Product of the distinct prime numbers
The prime factorization of 21131421 is 3 × 7043807.
Since it has a total of 2 prime factors.
5 , 6 , 37 , 65 , 627 , 985 , 6205 , 1875 , 42715 , 55786 , 294479 , 781677 , 6902329 , 8114976 , 11844124 , 88345525 , 730977843 , 474950306 , 4336447490 , 4614949354
n×2
42262842
n×3
63394263
n×4
84525684
n×5
105657105
n÷2
10565710.5
n÷3
7043807
n÷3
5282855.25
n÷5
4226284.2
n2
446536953479241
n3
9.4359603560273E+21
n4
1.9939525082252E+29
n5
4.2135049905313E+36
2 √n
4596.8925373561
3 √n
276.46674594381
4 √n
67.800387442522
5 √n
29.173312256531
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
-21131420
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 21131421 can be divided by 4 positive divisors.
The sum of these divisors (counting 21131421) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100111000010011101
3
Ternary
1110202120212020
4
Quaternary
1100213002131
5
Quinary
20402201141
6
Senary
2032530353
8
Octal
120470235
10
Decimal
21131421
12
Duodecimal
70b09b9
16
Hexadecimal
142709d
20
Vigesimal
6c18b1
36
Base36
ckx3x
md5
693fa0482482f17edcf044311d561a11
sha1
c9abdc2811d7fdefa6f856ddde255c938602d6a5
sha256
73ba67a4796fdd3404efe774e6df89f918b4a91d67a0e50ee1bae6f0f3ed5a19
sha512
7e016d5a8b5c42e255356b8eb72121fd939b53f0292c6a21a5a3b93b9e7d0808bb909fc5c811cd2588573c4d5d54f7542062b9c6c419b6a96fc24b714acd10f0
ripemd-160
1549f9d30dacff0ffe45f59b2658001c5de867b8
Diameter
42262842
Circumference
132772633.94703
Area
1.4028372126068E+15
Volume
3.952525831208E+22
Surface area
5.611348850427E+15
Circumference
132772633.94703
Perimeter
84525684
Area
446536953479241
Diagonal
29884342.170416
Surface area
2679221720875446
Volume
9.4359603560273E+21
Space diagonal
36600694.808128
Perimeter
63394263
Area
1.9335617272077E+14
Altitude
18300347.404064
Surface area
1.9335617272077E+14
Volume
1.1120385924591E+21
Height
9961447.3901385