It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 316 is not a prime number.
For example, 42 316 can be divided by 2: 42 316 / 2 = 21 158.
For 42 316 to be a prime number, it would have been required that 42 316 has only two divisors, i.e., itself and 1.
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42 316 is an even number, because it is evenly divisible by 2: 42 316 / 2 = 21 158.
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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 42 316 is about 205.709.
Thus, the square root of 42 316 is not an integer, and therefore 42 316 is not a square number.
The square of a number (here 42 316) is the result of the product of this number (42 316) by itself (i.e., 42 316 × 42 316); the square of 42 316 is sometimes called "raising 42 316 to the power 2", or "42 316 squared".
The square of 42 316 is 1 790 643 856 because 42 316 × 42 316 = 42 3162 = 1 790 643 856.
As a consequence, 42 316 is the square root of 1 790 643 856.
The multiples of 42 316 are all integers evenly divisible by 42 316, that is all numbers such that the remainder of the division by 42 316 is zero. There are infinitely many multiples of 42 316. The smallest multiples of 42 316 are: