Q: Is 2,742,642 a Prime Number?
A: No, 2,742,642 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 2742642 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 21,767 43,534 65,301 130,602 152,369 195,903 304,738 391,806 457,107 914,214 1,371,321 and 2,742,642, with no remainder.
Since 2,742,642 cannot be divided by just 1 and 2,742,642, it is not a prime number.