Q: Is 42,556 a Prime Number?
A: No, 42,556 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 42556 can be evenly divided by 1 2 4 10,639 21,278 and 42,556, with no remainder.
Since 42,556 cannot be divided by just 1 and 42,556, it is not a prime number.