It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 424 402 is not a prime number.
For example, 424 402 can be divided by 2: 424 402 / 2 = 212 201.
For 424 402 to be a prime number, it would have been required that 424 402 has only two divisors, i.e., itself and 1.
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424 402 is an even number, because it is evenly divisible by 2: 424 402 / 2 = 212 201.
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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 424 402 is about 651.461.
Thus, the square root of 424 402 is not an integer, and therefore 424 402 is not a square number.
The square of a number (here 424 402) is the result of the product of this number (424 402) by itself (i.e., 424 402 × 424 402); the square of 424 402 is sometimes called "raising 424 402 to the power 2", or "424 402 squared".
The square of 424 402 is 180 117 057 604 because 424 402 × 424 402 = 424 4022 = 180 117 057 604.
As a consequence, 424 402 is the square root of 180 117 057 604.
The multiples of 424 402 are all integers evenly divisible by 424 402, that is all numbers such that the remainder of the division by 424 402 is zero. There are infinitely many multiples of 424 402. The smallest multiples of 424 402 are: