Q: Is 540,021 a Prime Number?
A: No, 540,021 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 540021 can be evenly divided by 1 3 180,007 and 540,021, with no remainder.
Since 540,021 cannot be divided by just 1 and 540,021, it is not a prime number.