Q: Is 542,521 a Prime Number?
A: No, 542,521 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 542521 can be evenly divided by 1 7 17 47 97 119 329 679 799 1,649 4,559 5,593 11,543 31,913 77,503 and 542,521, with no remainder.
Since 542,521 cannot be divided by just 1 and 542,521, it is not a prime number.