Q: Is 221,742 a Prime Number?
A: No, 221,742 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 221742 can be evenly divided by 1 2 3 6 9 18 97 127 194 254 291 381 582 762 873 1,143 1,746 2,286 12,319 24,638 36,957 73,914 110,871 and 221,742, with no remainder.
Since 221,742 cannot be divided by just 1 and 221,742, it is not a prime number.