Q: Is 1,125,378 a Prime Number?
A: No, 1,125,378 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 1125378 can be evenly divided by 1 2 3 6 9 18 103 206 309 607 618 927 1,214 1,821 1,854 3,642 5,463 10,926 62,521 125,042 187,563 375,126 562,689 and 1,125,378, with no remainder.
Since 1,125,378 cannot be divided by just 1 and 1,125,378, it is not a prime number.