Q: Is 421,910 a Prime Number?
A: No, 421,910 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 421910 can be evenly divided by 1 2 5 10 31 62 155 310 1,361 2,722 6,805 13,610 42,191 84,382 210,955 and 421,910, with no remainder.
Since 421,910 cannot be divided by just 1 and 421,910, it is not a prime number.