-135 is an odd number.
-135 is a Harshad number, which means it is divisible by the sum of its digits (1 + 3 + 5 = 9, and -135 is divisible by 9).
In binary, -135 is represented as 1111111111111111111111111111111111111111111111111111111101111001.
In hex, -135 is represented as ffffffffffffff79.