Q: Is 1,722,421 a Prime Number?
A: No, 1,722,421 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 1722421 can be evenly divided by 1 163 10,567 and 1,722,421, with no remainder.
Since 1,722,421 cannot be divided by just 1 and 1,722,421, it is not a prime number.