Q: Is 3,947,742 a Prime Number?
A: No, 3,947,742 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 3947742 can be evenly divided by 1 2 3 6 9 18 71 142 213 426 639 1,278 3,089 6,178 9,267 18,534 27,801 55,602 219,319 438,638 657,957 1,315,914 1,973,871 and 3,947,742, with no remainder.
Since 3,947,742 cannot be divided by just 1 and 3,947,742, it is not a prime number.