Q: Is 1,387,438 a Prime Number?
A: No, 1,387,438 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 1387438 can be evenly divided by 1 2 13 17 26 34 43 73 86 146 221 442 559 731 949 1,118 1,241 1,462 1,898 2,482 3,139 6,278 9,503 16,133 19,006 32,266 40,807 53,363 81,614 106,726 693,719 and 1,387,438, with no remainder.
Since 1,387,438 cannot be divided by just 1 and 1,387,438, it is not a prime number.