Q: Is 2,142,440 a Prime Number?
A: No, 2,142,440 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 2142440 can be evenly divided by 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 2,819 5,638 11,276 14,095 22,552 28,190 53,561 56,380 107,122 112,760 214,244 267,805 428,488 535,610 1,071,220 and 2,142,440, with no remainder.
Since 2,142,440 cannot be divided by just 1 and 2,142,440, it is not a prime number.