It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 462 is not a prime number.
For example, 42 462 can be divided by 2: 42 462 / 2 = 21 231.
For 42 462 to be a prime number, it would have been required that 42 462 has only two divisors, i.e., itself and 1.
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42 462 is an even number, because it is evenly divisible by 2: 42 462 / 2 = 21 231.
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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 42 462 is about 206.063.
Thus, the square root of 42 462 is not an integer, and therefore 42 462 is not a square number.
The square of a number (here 42 462) is the result of the product of this number (42 462) by itself (i.e., 42 462 × 42 462); the square of 42 462 is sometimes called "raising 42 462 to the power 2", or "42 462 squared".
The square of 42 462 is 1 803 021 444 because 42 462 × 42 462 = 42 4622 = 1 803 021 444.
As a consequence, 42 462 is the square root of 1 803 021 444.
The multiples of 42 462 are all integers evenly divisible by 42 462, that is all numbers such that the remainder of the division by 42 462 is zero. There are infinitely many multiples of 42 462. The smallest multiples of 42 462 are: