Q: Is 427,878 a Prime Number?
A: No, 427,878 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 427878 can be evenly divided by 1 2 3 6 9 11 18 22 33 66 99 198 2,161 4,322 6,483 12,966 19,449 23,771 38,898 47,542 71,313 142,626 213,939 and 427,878, with no remainder.
Since 427,878 cannot be divided by just 1 and 427,878, it is not a prime number.