Q: Is 642,869 a Prime Number?
A: Yes, 642,869 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 642869 can be evenly divided by 1 and 642,869, with no remainder.
Since 642,869 can be divided by just 1 and 642,869, it is a prime number.