121998105 is an odd 9-digits composite number following 121998104
and preceding 121998106 . In scientific notation, it is written as 1.21998105 × 10^8.
The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors.
There are 64550304 positive integers (up to 121998105) that are relatively prime to 121998105.
121998105 has 16 divisors, whose sum is 163952640
The reverse of 121998105 is 501899121
Previous prime number is 127
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 36
Digital Root 9
Name
one hundred twenty-one million nine hundred ninety-eight thousand one hundred five
Scientific notation
1.21998105 × 10^8
Engineering notation
1.21998105 × 10^6
Prime Factorization
9 × 5 × 127 × 21347
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
121998105
Product of the distinct prime numbers
The prime factorization of 121998105 is 9 × 5 × 127 × 21347.
Since it has a total of 4 prime factors.
6 , 10 , 98 , 44 , 521 , 387 , 1128 , 2406 , 39469 , 64818 , 691032 , 178390 , 6863377 , 8809893 , 3049943 , 89235714 , 732009122 , 621611242 , 7129665184 , 3516413015
n×2
243996210
n×3
365994315
n×4
487992420
n×5
609990525
n÷2
60999052.5
n÷3
40666035
n÷3
30499526.25
n÷5
24399621
n2
14883537623591025
n3
1.8157633857743E+24
n4
2.2151969219285E+32
n5
2.7024982667711E+40
2 √n
11045.275234235
3 √n
495.96499845143
4 √n
105.09650438637
5 √n
41.42577261019
1 , 5 , 9 , 45 , 127 , 635 , 1143 , 5715 , 21347 , 106735 , 192123 , 960615 , 2711069 , 13555345 , 24399621 , 121998105
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
-121998104
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 121998105 can be divided by 16 positive divisors.
The sum of these divisors (counting 121998105) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111010001011000101100011001
3
Ternary
22111120010221100
4
Quaternary
13101120230121
5
Quinary
222212414410
6
Senary
20034502013
8
Octal
721305431
10
Decimal
121998105
12
Duodecimal
34a34909
16
Hexadecimal
7458b19
20
Vigesimal
1i29f55
36
Base36
20muc9
md5
6552bd3e2635adf387b746c8ad53e765
sha1
d97ea42c4184cb957d52d876c919026b6a26b96d
sha256
ccfb5af99ad7d11e0c32eff6ed90cd21ec0be4325555fb238dfe2c6dc7f15053
sha512
7c07a6d1098b11d3d1529e32bcf688bce4ac354bf441ccfa301f328459fabf729992723e9a6dfdeb4fc1e01072e7970d6e86dcce45a9a56496ac9d51a143e75d
ripemd-160
08c0c160a732b6eaec63dfb53e85ce191fc81c3f
Diameter
243996210
Circumference
766536700.83975
Area
4.6758012457701E+16
Volume
7.6058518845412E+24
Surface area
1.870320498308E+17
Circumference
766536700.83975
Perimeter
487992420
Area
14883537623591025
Diagonal
172531374.67482
Surface area
89301225741546150
Volume
1.8157633857743E+24
Space diagonal
211306916.28712
Perimeter
365994315
Area
6.4447608401056E+15
Altitude
105653458.14356
Surface area
6.4447608401056E+15
Volume
2.1398976718521E+23
Height
57510458.224939