Q: Is 442,638 a Prime Number?
A: No, 442,638 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 442638 can be evenly divided by 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 1,171 2,342 3,513 7,026 8,197 10,539 16,394 21,078 24,591 31,617 49,182 63,234 73,773 147,546 221,319 and 442,638, with no remainder.
Since 442,638 cannot be divided by just 1 and 442,638, it is not a prime number.