12720121 is an odd 8-digits composite number following 12720120
and preceding 12720122 . In scientific notation, it is written as 1.2720121 × 10^7.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 12688000 positive integers (up to 12720121) that are relatively prime to 12720121.
12720121 has 4 divisors, whose sum is 12752244
The reverse of 12720121 is 12102721
Previous prime number is 31721
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7
Name
twelve million seven hundred twenty thousand one hundred twenty-one
Scientific notation
1.2720121 × 10^7
Engineering notation
1.2720121 × 10^6
Prime Factorization
31721 × 401
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
12720121
Product of the distinct prime numbers
The prime factorization of 12720121 is 31721 × 401.
Since it has a total of 2 prime factors.
8 , 7 , 67 , 71 , 41 , 745 , 9022 , 8231 , 72081 , 38261 , 666756 , 671609 , 5882170 , 1991528 , 87064032 , 14324171 , 557545049 , 235143462 , 5416819142 , 3625166938
n×2
25440242
n×3
38160363
n×4
50880484
n×5
63600605
n÷2
6360060.5
n÷3
4240040.3333333
n÷3
3180030.25
n÷5
2544024.2
n2
161801478254641
n3
2.0581343813779E+21
n4
2.6179718365387E+28
n5
3.3300918535365E+35
2 √n
3566.5278633427
3 √n
233.43380412445
4 √n
59.72041412568
5 √n
26.357137882408
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
-12720120
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 12720121 can be divided by 4 positive divisors.
The sum of these divisors (counting 12720121) is 1, the average is 0.25.
Base
System
Value
2
Binary
110000100001011111111001
3
Ternary
212221020201121
4
Quaternary
300201133321
5
Quinary
11224020441
6
Senary
1132345241
8
Octal
60413771
10
Decimal
12720121
12
Duodecimal
4315221
16
Hexadecimal
c217f9
20
Vigesimal
3ja061
36
Base36
7kmwp
md5
97f13487964c83a1b608f27855e36a89
sha1
d628cc9e28e425d85c6b0c4c1557ac819de2bd62
sha256
488016d4a2b0e6332dae678d661dab59eb8dd102a1d11e8de9004cc7f81ad900
sha512
0869afaba0ebec858b7265b113630929a58a16fcb0c399b28b9c4f786796adb219752e2ef4169cb0967ed23151e1ff8da0d34cec53f7e694f59b088a70416d6a
ripemd-160
a39587edc472022a13a8c4753f4a0338acda9d0a
Diameter
25440242
Circumference
79922877.372747
Area
5.0831433542475E+14
Volume
8.6210931368499E+21
Surface area
2.033257341699E+15
Circumference
79922877.372747
Perimeter
50880484
Area
161801478254641
Diagonal
17988967.633227
Surface area
970808869527846
Volume
2.0581343813779E+21
Space diagonal
22031895.850424
Perimeter
38160363
Area
70062095269197
Altitude
11015947.925212
Surface area
70062095269197
Volume
2.4255346294425E+20
Height
5996322.5444089