Q: Is 42,521 a Prime Number?
A: No, 42,521 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 42521 can be evenly divided by 1 101 421 and 42,521, with no remainder.
Since 42,521 cannot be divided by just 1 and 42,521, it is not a prime number.