Representation numerals

ρκ

١٢٠

CXX

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一百二十

קכ

Numeral systems

Binary: 1111000

Septimal (base 7): 231

Octal: 170

Hexadecimal: 78

Base 24: 50

Factorization

120 = 2 × 2 × 2 × 3 × 5

120 has 16 divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

Sum of all divisors other than 120: 240

Sums & differences

Difference of 2 squares: 120 = 13^{2} - 7^{2} = 17^{2} - 13^{2} = 31^{2} - 29^{2}

Goldbach conjecture: 120 = 113 + 7 = 109 + 11 = 107 + 13 = 103 + 17 = 101 + 19 = 97 + 23 = 89 + 31 = 83 + 37 = 79 + 41 = 73 + 47 = . . . (only the first 10 pairs are shown)

Characteristics

120 is a triangular number

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The next triangular is: 136

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The next triangular is: 136

120 is a hexagonal number