Q: Is 1,670,421 a Prime Number?
A: No, 1,670,421 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 1670421 can be evenly divided by 1 3 23 43 69 129 563 989 1,689 2,967 12,949 24,209 38,847 72,627 556,807 and 1,670,421, with no remainder.
Since 1,670,421 cannot be divided by just 1 and 1,670,421, it is not a prime number.