Q: Is 1,235,840 a Prime Number?
A: No, 1,235,840 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 1235840 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 1,931 3,862 7,724 9,655 15,448 19,310 30,896 38,620 61,792 77,240 123,584 154,480 247,168 308,960 617,920 and 1,235,840, with no remainder.
Since 1,235,840 cannot be divided by just 1 and 1,235,840, it is not a prime number.