121998138 is an even 9-digits composite number following 121998137
and preceding 121998139 . In scientific notation, it is written as 1.21998138 × 10^8.
The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors.
There are 39599616 positive integers (up to 121998138) that are relatively prime to 121998138.
121998138 has 32 divisors, whose sum is 250430400
The reverse of 121998138 is 831899121
Previous prime number is 509
Is Prime? no Number parity even Number length 9 Sum of Digits 42 Digital Root 6
Name
one hundred twenty-one million nine hundred ninety-eight thousand one hundred thirty-eight
Scientific notation
1.21998138 × 10^8
Engineering notation
1.21998138 × 10^6
Prime Factorization
2 × 3 × 43 × 509 × 929
Composite number
ω Distinct Factors
5 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
121998138 Product of the distinct prime numbers
The prime factorization of 121998138 is 2 × 3 × 43 × 509 × 929.
Since it has a total of 5 prime factors.
8 , 3 , 86 , 21 , 853 , 316 , 8995 , 2662 , 85959 , 65640 , 21010 , 867199 , 406370 , 2926657 , 43828742 , 12990263 , 272884875 , 73358114 , 4742779357 , 9467378979
n×2
243996276
n×3
365994414
n×4
487992552
n×5
609990690
n÷2
60999069
n÷3
40666046
n÷3
30499534.5
n÷5
24399627.6
n2
14883545675467044
n3
1.8157648592449E+24
n4
2.2151993187371E+32
n5
2.702501921848E+40
2 √n11045.276728086
3 √n495.96504317028
4 √n105.09651149342
5 √n41.42577485129
1 , 2 , 3 , 6 , 43 , 86 , 129 , 258 , 509 , 929 , 1018 , 1527 , 1858 , 2787 , 3054 , 5574 , 21887 , 39947 , 43774 , 65661 , 79894 , 119841 , 131322 , 239682 , 472861 , 945722 , 1418583 , 2837166 , 20333023 , 40666046 , 60999069 , 121998138
32 divisors
τ Total Divisors
32 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-121998137 Sum of the proper positive divisors of n
A Arithmetic Mean
0.03125 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
32 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 121998138 can be divided by 32 positive divisors.
The sum of these divisors (counting 121998138) is 1, the average is 0.03125.
Base
System
Value
2
Binary
111010001011000101100111010
3
Ternary
22111120010222120
4
Quaternary
13101120230322
5
Quinary
222212420023
6
Senary
20034502110
8
Octal
721305472
10
Decimal
121998138
12
Duodecimal
34a34936
16
Hexadecimal
7458b3a
20
Vigesimal
1i29f6i
36
Base36
20mud6
md5
5fbb34214f54066eb92527c8f8bdf0f5
sha1
56d06c138a4bf2f16edd3e6cf1fa9f6f80f80939
sha256
23356d9d5d554a9a8636b36a5e104c660136b0fd3666aff440c17836cfb24baf
sha512
9207520592cde674970c21285a515c3d51f49b92dd07176f1bb7396389f17834aee330857216c80e68c47375a6e2e7d1e56582cb091b8b4214730cff804fb383
ripemd-160
d0cbf9250ec889100cef16de550eb55240e873c8
Diameter
243996276
Circumference
766536908.18487
Area
4.6758037753415E+16
Volume
7.6058580566005E+24
Surface area
1.8703215101366E+17
Circumference
766536908.18487
Perimeter
487992552
Area
14883545675467044
Diagonal
172531421.34386
Surface area
89301274052802264
Volume
1.8157648592449E+24
Space diagonal
211306973.4448
Perimeter
365994414
Area
6.4447643266702E+15
Altitude
105653486.7224
Surface area
6.4447643266702E+15
Volume
2.1398994083539E+23
Height
57510473.781288