128

128 = 2⁷. It is the smallest number to be the product of seven prime factors.

128 is a power of 2, all of whose digits are themselves powers of 2.

128 is the number made by starting with 1 and doubling seven times: 1, 2, 4, 8, 16, 32, 64, 128.

128 = 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23.

128 is 10000000 in base 2 (binary).

128 is the largest number that is not the sum of distinct squares.

128 has a representation as a sum of two squares: 128 = 8² + 8².

Released in 1985, the Commodore 128 home computer was that last 8-bit machine commercially released by Commodore Business Machines.

Source: Phillips, R. 2004. Numbers: Facts, Figures and Fiction. Badsey Publications.