Q: Is 678,542 a Prime Number?
A: No, 678,542 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 678542 can be evenly divided by 1 2 29 58 11,699 23,398 339,271 and 678,542, with no remainder.
Since 678,542 cannot be divided by just 1 and 678,542, it is not a prime number.