Q: Is 1,421,775 a Prime Number?
A: No, 1,421,775 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 1421775 can be evenly divided by 1 3 5 9 15 25 45 71 75 89 213 225 267 355 445 639 801 1,065 1,335 1,775 2,225 3,195 4,005 5,325 6,319 6,675 15,975 18,957 20,025 31,595 56,871 94,785 157,975 284,355 473,925 and 1,421,775, with no remainder.
Since 1,421,775 cannot be divided by just 1 and 1,421,775, it is not a prime number.