Q: Is 1,238,428 a Prime Number?
A: No, 1,238,428 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 1238428 can be evenly divided by 1 2 4 67 134 268 4,621 9,242 18,484 309,607 619,214 and 1,238,428, with no remainder.
Since 1,238,428 cannot be divided by just 1 and 1,238,428, it is not a prime number.