121806981 (number)

121806981 is an odd 9-digits composite number following 121806980 and preceding 121806982. In scientific notation, it is written as 1.21806981 × 10^8. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 80445096 positive integers (up to 121806981) that are relatively prime to 121806981.

Interesting facts

Basic properties

Name

Name one hundred twenty-one million eight hundred six thousand nine hundred eighty-one

Notation

Scientific notation 1.21806981 × 10^8
Engineering notation 1.21806981 × 10^6

Prime Factorization of 121806981

Prime Factorization 9 × 107 × 126487

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 121806981
Product of the distinct prime numbers

The prime factorization of 121806981 is 9 × 107 × 126487. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 10, 41, 60, 835, 355, 2162, 8569, 92613, 73518, 783577, 462923, 8856377, 8615752, 55177030, 89517035, 537410255, 1613202, 5889962511, 3704955664

Basic calculations (n = 121806981)

Multiplication

n×y
n×2 243613962
n×3 365420943
n×4 487227924
n×5 609034905

Division

n÷y
n÷2 60903490.5
n÷3 40602327
n÷3 30451745.25
n÷5 24361396.2

Exponentiation

ny
n2 14836940620334361
n3 1.8072429442392E+24
n4 2.2013480697133E+32
n5 2.6813956250195E+40

Nth Root

y√n
2√n 11036.619998895
3√n 495.70586776599
4√n 105.05531875586
5√n 41.412784825706

Divisors of 121806981

1, 9, 107, 963, 126487, 1138383, 13534109, 121806981

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -121806980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 121806981 can be divided by 8 positive divisors. The sum of these divisors (counting 121806981) is 1, the average is 0.125.

Base conversion 121806981

Base System Value
2 Binary 111010000101010000010000101
3 Ternary 22111012102202200
4 Quaternary 13100222002011
5 Quinary 222140310411
6 Senary 20030425113
8 Octal 720520205
10 Decimal 121806981
12 Duodecimal 34962199
16 Hexadecimal 742a085
20 Vigesimal 1i15h91
36 Base36 20iqv9

Cryptographic Hash Functions

md5 f5bcf2a061c28b6911fb756667a9f10f
sha1 ccf586e01d4f727419dcebf471da1091efac523d
sha256 3c7abf01acbded51a63d80c59f04eec8d643e672e5d0c41a7c4bf5678bfc2516
sha512 070dd40ed27eea0b04cec5ce09fab8a288224be2df7653e9a1d3379b7632db9bd0eeaf224ae47e6766f47266f0b7d04e22bfaf77d05b56bbe4c2ef2b6ee7f8a4
ripemd-160 197b9ae5e98cb2c1b9e03673a8a978f141e434e9

121806981 as geometric shapes

Circle

Radius = n
Diameter 243613962
Circumference 765335833.3311
Area 4.661162365459E+16

Sphere

Radius = n
Volume 7.5701615424985E+24
Surface area 1.8644649461836E+17
Circumference 765335833.3311

Square

Length = n
Perimeter 487227924
Area 14836940620334361
Diagonal 172261084.52192

Cube

Length = n
Surface area 89021643722006166
Volume 1.8072429442392E+24
Space diagonal 210975879.80858

Equilateral Triangle

Length = n
Perimeter 365420943
Area 6.4245837458254E+15
Altitude 105487939.90429

Triangular Pyramid

Length = n
Surface area 6.4245837458254E+15
Volume 2.1298562352051E+23
Height 57420361.507307