It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 004 is not a prime number.
For example, 802 004 can be divided by 2: 802 004 / 2 = 401 002.
For 802 004 to be a prime number, it would have been required that 802 004 has only two divisors, i.e., itself and 1.
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802 004 is an even number, because it is evenly divisible by 2: 802 004 / 2 = 401 002.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 802 004 is about 895.547.
Thus, the square root of 802 004 is not an integer, and therefore 802 004 is not a square number.
The square of a number (here 802 004) is the result of the product of this number (802 004) by itself (i.e., 802 004 × 802 004); the square of 802 004 is sometimes called "raising 802 004 to the power 2", or "802 004 squared".
The square of 802 004 is 643 210 416 016 because 802 004 × 802 004 = 802 0042 = 643 210 416 016.
As a consequence, 802 004 is the square root of 643 210 416 016.
The multiples of 802 004 are all integers evenly divisible by 802 004, that is all numbers such that the remainder of the division by 802 004 is zero. There are infinitely many multiples of 802 004. The smallest multiples of 802 004 are: