Q: Is 1,872,423 a Prime Number?
A: No, 1,872,423 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 1872423 can be evenly divided by 1 3 7 9 21 27 63 189 9,907 29,721 69,349 89,163 208,047 267,489 624,141 and 1,872,423, with no remainder.
Since 1,872,423 cannot be divided by just 1 and 1,872,423, it is not a prime number.