123 (number)

123 is an odd 3-digits composite number following 122 and preceding 124. In scientific notation, it is written as 1.23 × 10^2. The sum of its digits is 6. It has a total of 2 prime factors and 4 positive divisors. There are 80 positive integers (up to 123) that are relatively prime to 123.

Interesting facts

Basic properties

Name

Name one hundred twenty-three

Notation

Scientific notation 1.23 × 10^2
Engineering notation 1.23 × 10^0

Prime Factorization of 123

Prime Factorization 41 × 3

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 123
Product of the distinct prime numbers

The prime factorization of 123 is 41 × 3. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 123)

Multiplication

n×y
n×2 246
n×3 369
n×4 492
n×5 615

Division

n÷y
n÷2 61.5
n÷3 41
n÷3 30.75
n÷5 24.6

Exponentiation

ny
n2 15129
n3 1860867
n4 228886641
n5 28153056843

Nth Root

y√n
2√n 11.090536506409
3√n 4.9731898332686
4√n 3.3302457126178
5√n 2.618068601889

Divisors of 123

1, 3, 41, 123

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -122
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 123 can be divided by 4 positive divisors. The sum of these divisors (counting 123) is 1, the average is 0.25.

Base conversion 123

Base System Value
2 Binary 1111011
3 Ternary 11120
4 Quaternary 1323
5 Quinary 443
6 Senary 323
8 Octal 173
10 Decimal 123
12 Duodecimal a3
16 Hexadecimal 7b
20 Vigesimal 63
36 Base36 3f

Cryptographic Hash Functions

md5 202cb962ac59075b964b07152d234b70
sha1 40bd001563085fc35165329ea1ff5c5ecbdbbeef
sha256 a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3
sha512 3c9909afec25354d551dae21590bb26e38d53f2173b8d3dc3eee4c047e7ab1c1eb8b85103e3be7ba613b31bb5c9c36214dc9f14a42fd7a2fdb84856bca5c44c2
ripemd-160 e3431a8e0adbf96fd140103dc6f63a3f8fa343ab

123 as geometric shapes

Circle

Radius = n
Diameter 246
Circumference 772.83179278309
Area 47529.15525616

Sphere

Radius = n
Volume 7794781.4620102
Surface area 190116.62102464
Circumference 772.83179278309

Square

Length = n
Perimeter 492
Area 15129
Diagonal 173.94826817189

Cube

Length = n
Surface area 90774
Volume 1860867
Space diagonal 213.04224933097

Equilateral Triangle

Length = n
Perimeter 369
Area 6551.0491669274
Altitude 106.52112466549

Triangular Pyramid

Length = n
Surface area 6551.0491669274
Volume 219305.27909771
Height 57.982756057297