121387987 (number)

121387987 is an odd 9-digits composite number following 121387986 and preceding 121387988. In scientific notation, it is written as 1.21387987 × 10^8. The sum of its digits is 46. It has a total of 4 prime factors and 16 positive divisors. There are 100789920 positive integers (up to 121387987) that are relatively prime to 121387987.

Interesting facts

Basic properties

Name

Name one hundred twenty-one million three hundred eighty-seven thousand nine hundred eighty-seven

Notation

Scientific notation 1.21387987 × 10^8
Engineering notation 1.21387987 × 10^6

Prime Factorization of 121387987

Prime Factorization 7 × 67 × 61 × 4243

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 121387987
Product of the distinct prime numbers

The prime factorization of 121387987 is 7 × 67 × 61 × 4243. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 5, 14, 49, 387, 400, 6178, 3500, 21707, 88019, 144993, 138316, 1070953, 8488795, 61793848, 69376698, 772070078, 531158785, 4408721323, 1741973191

Basic calculations (n = 121387987)

Multiplication

n×y
n×2 242775974
n×3 364163961
n×4 485551948
n×5 606939935

Division

n÷y
n÷2 60693993.5
n÷3 40462662.333333
n÷3 30346996.75
n÷5 24277597.4

Exponentiation

ny
n2 14735043387912169
n3 1.7886572552163E+24
n4 2.1712150364365E+32
n5 2.6355942261716E+40

Nth Root

y√n
2√n 11017.621658053
3√n 495.13683527865
4√n 104.96485915797
5√n 41.384255044715

Divisors of 121387987

1, 7, 61, 67, 427, 469, 4087, 4243, 28609, 29701, 258823, 284281, 1811761, 1989967, 17341141, 121387987

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 -121387986
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 121387987 can be divided by 16 positive divisors. The sum of these divisors (counting 121387987) is 1, the average is 0.0625.

Base conversion 121387987

Base System Value
2 Binary 111001111000011101111010011
3 Ternary 22110102011000101
4 Quaternary 13033003233103
5 Quinary 222033403422
6 Senary 20013433231
8 Octal 717035723
10 Decimal 121387987
12 Duodecimal 3479b817
16 Hexadecimal 73c3bd3
20 Vigesimal 1hid9j7
36 Base36 209rkj

Cryptographic Hash Functions

md5 4780308db87608d6744ed413ead3069f
sha1 fb7e00a053741a9bb1bbca86d5538078ddefe094
sha256 c09296eb07b27a0586a0ba250af88b35ac87f4d81b32c785285aff19aa4ca7fe
sha512 9404dce7d60ab2a3c9f58582dac4d5182719eb7f11a1f6b8447601896bace4c36b94ff3d296a0917ac3d92166fffe03f0202c6cfdedc70e2beb6322fe5a91dcb
ripemd-160 639792a8dcade785ecff0b1fad3a267491eb62ac

121387987 as geometric shapes

Circle

Radius = n
Diameter 242775974
Circumference 762703216.38651
Area 4.6291504057792E+16

Sphere

Radius = n
Volume 7.4923099903702E+24
Surface area 1.8516601623117E+17
Circumference 762703216.38651

Square

Length = n
Perimeter 485551948
Area 14735043387912169
Diagonal 171668537.52457

Cube

Length = n
Surface area 88410260327473014
Volume 1.7886572552163E+24
Space diagonal 210250160.91251

Equilateral Triangle

Length = n
Perimeter 364163961
Area 6.3804609498989E+15
Altitude 105125080.45626

Triangular Pyramid

Length = n
Surface area 6.3804609498989E+15
Volume 2.1079527906366E+23
Height 57222845.841523