Q: Is 540,421 a Prime Number?
A: No, 540,421 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 540421 can be evenly divided by 1 7 41 49 269 287 1,883 2,009 11,029 13,181 77,203 and 540,421, with no remainder.
Since 540,421 cannot be divided by just 1 and 540,421, it is not a prime number.