It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 462 is not a prime number.
For example, 402 462 can be divided by 2: 402 462 / 2 = 201 231.
For 402 462 to be a prime number, it would have been required that 402 462 has only two divisors, i.e., itself and 1.
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402 462 is an even number, because it is evenly divisible by 2: 402 462 / 2 = 201 231.
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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 402 462 is about 634.399.
Thus, the square root of 402 462 is not an integer, and therefore 402 462 is not a square number.
The square of a number (here 402 462) is the result of the product of this number (402 462) by itself (i.e., 402 462 × 402 462); the square of 402 462 is sometimes called "raising 402 462 to the power 2", or "402 462 squared".
The square of 402 462 is 161 975 661 444 because 402 462 × 402 462 = 402 4622 = 161 975 661 444.
As a consequence, 402 462 is the square root of 161 975 661 444.
The multiples of 402 462 are all integers evenly divisible by 402 462, that is all numbers such that the remainder of the division by 402 462 is zero. There are infinitely many multiples of 402 462. The smallest multiples of 402 462 are: