Q: Is 1,402,578 a Prime Number?
A: No, 1,402,578 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 1402578 can be evenly divided by 1 2 3 6 9 18 67 134 201 402 603 1,163 1,206 2,326 3,489 6,978 10,467 20,934 77,921 155,842 233,763 467,526 701,289 and 1,402,578, with no remainder.
Since 1,402,578 cannot be divided by just 1 and 1,402,578, it is not a prime number.