-42 is an even number.
-42 is a Harshad number, which means it is divisible by the sum of its digits (4 + 2 = 6, and -42 is divisible by 6).
In binary, -42 is represented as 1111111111111111111111111111111111111111111111111111111111010110.
In hex, -42 is represented as ffffffffffffffd6.