Q: Is 1,375,407 a Prime Number?
A: No, 1,375,407 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 1375407 can be evenly divided by 1 3 9 11 27 33 99 121 297 363 421 1,089 1,263 3,267 3,789 4,631 11,367 13,893 41,679 50,941 125,037 152,823 458,469 and 1,375,407, with no remainder.
Since 1,375,407 cannot be divided by just 1 and 1,375,407, it is not a prime number.