Q: Is 2,135,421 a Prime Number?
A: No, 2,135,421 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 2135421 can be evenly divided by 1 3 9 17 51 153 289 821 867 2,463 2,601 7,389 13,957 41,871 125,613 237,269 711,807 and 2,135,421, with no remainder.
Since 2,135,421 cannot be divided by just 1 and 2,135,421, it is not a prime number.