121837981 is an odd 9-digits composite number following 121837980
and preceding 121837982 . In scientific notation, it is written as 1.21837981 × 10^8.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 121808764 positive integers (up to 121837981) that are relatively prime to 121837981.
121837981 has 4 divisors, whose sum is 121867200
The reverse of 121837981 is 189738121
Previous prime number is 5039
Is Prime? no Number parity odd Number length 9 Sum of Digits 40 Digital Root 4
Name
one hundred twenty-one million eight hundred thirty-seven thousand nine hundred eighty-one
Scientific notation
1.21837981 × 10^8
Engineering notation
1.21837981 × 10^6
Prime Factorization
5039 × 24179
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
121837981 Product of the distinct prime numbers
The prime factorization of 121837981 is 5039 × 24179.
Since it has a total of 2 prime factors.
6 , 1 , 90 , 67 , 896 , 615 , 3461 , 9364 , 91754 , 90631 , 220432 , 121291 , 2932839 , 4982629 , 82404548 , 46144801 , 110732790 , 127363226 , 1775651093 , 8944788883
n×2
243675962
n×3
365513943
n×4
487351924
n×5
609189905
n÷2
60918990.5
n÷3
40612660.333333
n÷3
30459495.25
n÷5
24367596.2
n2
14844493614156361
n3
1.8086231309162E+24
n4
2.2035899066073E+32
n5
2.6848094517301E+40
2 √n11038.024325032
3 √n495.74791674745
4 √n105.06200228928
5 √n41.414892530286
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
-121837980 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 121837981 can be divided by 4 positive divisors.
The sum of these divisors (counting 121837981) is 1, the average is 0.25.
Base
System
Value
2
Binary
111010000110001100110011101
3
Ternary
22111021000021211
4
Quaternary
13100301212131
5
Quinary
222142303411
6
Senary
20031224421
8
Octal
720614635
10
Decimal
121837981
12
Duodecimal
34978111
16
Hexadecimal
743199d
20
Vigesimal
1i19ej1
36
Base36
20jesd
md5
4ed7fd95264e469efa644408306af695
sha1
ce8f616e00a1dac2fb742c214fec9d1b578b7d59
sha256
feb5976b7927310b05621b4d0ccd2b95e270cfc0d934a0104d1ce376e7d1af2b
sha512
e2462e5ec7f06069666694d435932c15830e2bdde9a50a9cc9f7843f747bcc9d80a6772df7d3b5709e05874b28904c017e60aa2be39d64f8f249e3c72771cc31
ripemd-160
7c2fa9cc69115840b8d22edaae02266ab97b524c
Diameter
243675962
Circumference
765530612.07563
Area
4.6635352084494E+16
Volume
7.5759428549319E+24
Surface area
1.8654140833798E+17
Circumference
765530612.07563
Perimeter
487351924
Area
14844493614156361
Diagonal
172304925.14236
Surface area
89066961684938166
Volume
1.8086231309162E+24
Space diagonal
211029573.38361
Perimeter
365513943
Area
6.4278542880876E+15
Altitude
105514786.69181
Surface area
6.4278542880876E+15
Volume
2.1314828008028E+23
Height
57434975.047452