Q: Is 678,042 a Prime Number?
A: No, 678,042 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 678042 can be evenly divided by 1 2 3 6 9 18 139 271 278 417 542 813 834 1,251 1,626 2,439 2,502 4,878 37,669 75,338 113,007 226,014 339,021 and 678,042, with no remainder.
Since 678,042 cannot be divided by just 1 and 678,042, it is not a prime number.