Q: Is 542,787 a Prime Number?
A: No, 542,787 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 542787 can be evenly divided by 1 3 7 21 25,847 77,541 180,929 and 542,787, with no remainder.
Since 542,787 cannot be divided by just 1 and 542,787, it is not a prime number.