Q: Is 1,371,405 a Prime Number?
A: No, 1,371,405 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 1371405 can be evenly divided by 1 3 5 7 15 21 35 37 105 111 185 259 353 555 777 1,059 1,295 1,765 2,471 3,885 5,295 7,413 12,355 13,061 37,065 39,183 65,305 91,427 195,915 274,281 457,135 and 1,371,405, with no remainder.
Since 1,371,405 cannot be divided by just 1 and 1,371,405, it is not a prime number.