120 = 2x3x4x5 = 1x2x3x4x5 = 5!
120 = 12 × 3 + 4 + 56 + 7 + 8 + 9
120 = 9 × 8 + 7 + 6 × 5 + 4 + 3 × 2 + 1
120 = 0^5 + 1^6 + 2^8 − 3^9 + 4^7 + 5^2 + 6^1 + 7^4 + 8^0 + 9^3
120 = 11(1+1) − 1
120 = (2 + 2 + 2) × (22 − 2)
120 = 3 + 3 × (33 + 3 + 3)
120 = (4 + 4) × (44/4 + 4)
120 = 5 × 5 × 5 − 5
120 = 6 × (6 + 6 + 6) + 6 + 6
120 = 77 + 7 × 7 − 7 + 7/7
120 = 8 × (8 + 8) − 8
120 = 9 + 999/9
Quadruple factorial number n!!!!: a(n) = n*a(n-4), n = 10
Multiply-perfect number: n divides σ(n)
Sum of four consecutive primes
Numbers of edges of regular polygon constructible with unmarked straightedge and compass.
Factors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
Representations, Binary to Hexadecimal:
1111000_2
11110_3
1320_4
440_5
320_6
231_7
170_8
143_9
aa_11
a0_12
93_13
88_14
80_15
78_16
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Graduate Studies in Mathematics
