Q: Is 1,242,381 a Prime Number?
A: No, 1,242,381 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 1242381 can be evenly divided by 1 3 7 21 67 201 469 883 1,407 2,649 6,181 18,543 59,161 177,483 414,127 and 1,242,381, with no remainder.
Since 1,242,381 cannot be divided by just 1 and 1,242,381, it is not a prime number.