Q: Is 4,221,438 a Prime Number?
A: No, 4,221,438 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 4221438 can be evenly divided by 1 2 3 6 13 26 39 78 54,121 108,242 162,363 324,726 703,573 1,407,146 2,110,719 and 4,221,438, with no remainder.
Since 4,221,438 cannot be divided by just 1 and 4,221,438, it is not a prime number.