Q: Is 421,972 a Prime Number?
A: No, 421,972 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 421972 can be evenly divided by 1 2 4 31 41 62 82 83 124 164 166 332 1,271 2,542 2,573 3,403 5,084 5,146 6,806 10,292 13,612 105,493 210,986 and 421,972, with no remainder.
Since 421,972 cannot be divided by just 1 and 421,972, it is not a prime number.