Q: Is 4,201,638 a Prime Number?
A: No, 4,201,638 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 4201638 can be evenly divided by 1 2 3 6 7 14 21 42 71 142 213 426 497 994 1,409 1,491 2,818 2,982 4,227 8,454 9,863 19,726 29,589 59,178 100,039 200,078 300,117 600,234 700,273 1,400,546 2,100,819 and 4,201,638, with no remainder.
Since 4,201,638 cannot be divided by just 1 and 4,201,638, it is not a prime number.