Q: Is 540,721 a Prime Number?
A: No, 540,721 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 540721 can be evenly divided by 1 19 149 191 2,831 3,629 28,459 and 540,721, with no remainder.
Since 540,721 cannot be divided by just 1 and 540,721, it is not a prime number.