Q: Is 1,266,021 a Prime Number?
A: No, 1,266,021 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 1266021 can be evenly divided by 1 3 9 163 489 863 1,467 2,589 7,767 140,669 422,007 and 1,266,021, with no remainder.
Since 1,266,021 cannot be divided by just 1 and 1,266,021, it is not a prime number.