Q: Is 542,439 a Prime Number?
A: No, 542,439 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 542439 can be evenly divided by 1 3 9 60,271 180,813 and 542,439, with no remainder.
Since 542,439 cannot be divided by just 1 and 542,439, it is not a prime number.