121978981 is an odd 9-digits prime number following 121978980
and preceding 121978982 . In scientific notation, it is written as 1.21978981 × 10^8.
The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors.
There are 121978980 positive integers (up to 121978981) that are relatively prime to 121978981.
121978981 has 2 divisors, whose sum is 121978982
The reverse of 121978981 is 189879121
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 9
Sum of Digits 46
Digital Root 1
Name
one hundred twenty-one million nine hundred seventy-eight thousand nine hundred eighty-one
Scientific notation
1.21978981 × 10^8
Engineering notation
1.21978981 × 10^6
Prime Factorization
121978981
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
121978981
Product of the distinct prime numbers
The prime factorization of 121978981 is 121978981.
Since it has a total of 1 prime factors.
8 , 10 , 36 , 69 , 410 , 693 , 1286 , 4238 , 69952 , 9116 , 737768 , 458272 , 3948223 , 2975057 , 49204399 , 65332406 , 601955276 , 194568361 , 1657470850 , 7577172833
n×2
243957962
n×3
365936943
n×4
487915924
n×5
609894905
n÷2
60989490.5
n÷3
40659660.333333
n÷3
30494745.25
n÷5
24395796.2
n2
14878871805798361
n3
1.8149096213009E+24
n4
2.2138082621338E+32
n5
2.7003807594446E+40
2 √n
11044.409490779
3 √n
495.93908184593
4 √n
105.09238550332
5 √n
41.424473776647
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
121978982
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
60989491
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
11044.40953605
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999836037
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 121978981 can be divided by 2 positive divisors.
The sum of these divisors (counting 121978981) is 121978982, the average is 60989491.
Base
System
Value
2
Binary
111010001010100000001100101
3
Ternary
22111112011201001
4
Quaternary
13101110001211
5
Quinary
222211311411
6
Senary
20034233301
8
Octal
721240145
10
Decimal
121978981
12
Duodecimal
34a25831
16
Hexadecimal
7454065
20
Vigesimal
1i27791
36
Base36
20mfl1
md5
c9f0cdc344fcbb7d7d8ece6218e7e078
sha1
c7606cfc3ba32b374e728cb52a4cdf36f6f1f199
sha256
733d156873fc79f836fb94433c8d7655e571fce1643f40dbb14018b7e796e0c2
sha512
5be8ff6bc2e0bac5c5d031228b0af74b8ac3a25d3b343a57e60c743deeeed10d8819deb36dde7e485f88316951707b1aeec105220a66deb5cebb1c1c71e641fb
ripemd-160
908df5c296200f4fc9515ddad6d0223f7c1789b6
Diameter
243957962
Circumference
766416541.20394
Area
4.67433543588E+16
Volume
7.6022756442778E+24
Surface area
1.869734174352E+17
Circumference
766416541.20394
Perimeter
487915924
Area
14878871805798361
Diagonal
172504329.25465
Surface area
89273230834790166
Volume
1.8149096213009E+24
Space diagonal
211273792.54748
Perimeter
365936943
Area
6.4427404817367E+15
Altitude
105636896.27374
Surface area
6.4427404817367E+15
Volume
2.138891500771E+23
Height
57501443.084883