121437981 is an odd 9-digits composite number following 121437980
and preceding 121437982 . In scientific notation, it is written as 1.21437981 × 10^8.
The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors.
There are 69393024 positive integers (up to 121437981) that are relatively prime to 121437981.
121437981 has 16 divisors, whose sum is 205609600
The reverse of 121437981 is 189734121
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 36
Digital Root 9
Name
one hundred twenty-one million four hundred thirty-seven thousand nine hundred eighty-one
Scientific notation
1.21437981 × 10^8
Engineering notation
1.21437981 × 10^6
Prime Factorization
9 × 3 × 7 × 642529
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
121437981
Product of the distinct prime numbers
The prime factorization of 121437981 is 9 × 3 × 7 × 642529.
Since it has a total of 4 prime factors.
4 , 8 , 76 , 5 , 419 , 238 , 8820 , 4984 , 85420 , 18892 , 648959 , 675293 , 68726 , 2079487 , 79387636 , 81575792 , 987463299 , 366955170 , 7928955072 , 660890590
n×2
242875962
n×3
364313943
n×4
485751924
n×5
607189905
n÷2
60718990.5
n÷3
40479327
n÷3
30359495.25
n÷5
24287596.2
n2
14747183229356361
n3
1.7908681568101E+24
n4
2.1747941320021E+32
n5
2.6410260848098E+40
2 √n
11019.890244463
3 √n
495.2048004703
4 √n
104.97566501081
5 √n
41.387663328745
1 , 3 , 7 , 9 , 21 , 27 , 63 , 189 , 642529 , 1927587 , 4497703 , 5782761 , 13493109 , 17348283 , 40479327 , 121437981
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-121437980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 121437981 can be divided by 16 positive divisors.
The sum of these divisors (counting 121437981) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111001111001111111100011101
3
Ternary
22110111200121000
4
Quaternary
13033033330131
5
Quinary
222042003411
6
Senary
20014500513
8
Octal
717177435
10
Decimal
121437981
12
Duodecimal
34804739
16
Hexadecimal
73cff1d
20
Vigesimal
1hijej1
36
Base36
20au59
md5
45ed953a3e202fcfa8883bd09b111678
sha1
be7e0b05a942bc2624386aefc9a7edb28367cd5f
sha256
ceec7def7d39a2ec6e3c62f8e721b9007b63b457fcdccb4acff75e61cb3a5b47
sha512
621719b33ad773120cc175a578a3dd056ce3bbd499e347f6503a0e56f065db090fab24a836f66ac9bfcb864d85742770847bdcf01d83e615021f05afa757fe53
ripemd-160
88cb1e43d69363891f3518f7fcef9fcf24b70821
Diameter
242875962
Circumference
763017337.95275
Area
4.6329642494489E+16
Volume
7.50157099331E+24
Surface area
1.8531856997795E+17
Circumference
763017337.95275
Perimeter
485751924
Area
14747183229356361
Diagonal
171739239.71741
Surface area
88483099376138166
Volume
1.7908681568101E+24
Space diagonal
210336753.06058
Perimeter
364313943
Area
6.3857176554432E+15
Altitude
105168376.53029
Surface area
6.3857176554432E+15
Volume
2.1105583631525E+23
Height
57246413.239135