It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 488 542 is not a prime number.
For example, 488 542 can be divided by 2: 488 542 / 2 = 244 271.
For 488 542 to be a prime number, it would have been required that 488 542 has only two divisors, i.e., itself and 1.
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488 542 is an even number, because it is evenly divisible by 2: 488 542 / 2 = 244 271.
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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 488 542 is about 698.958.
Thus, the square root of 488 542 is not an integer, and therefore 488 542 is not a square number.
The square of a number (here 488 542) is the result of the product of this number (488 542) by itself (i.e., 488 542 × 488 542); the square of 488 542 is sometimes called "raising 488 542 to the power 2", or "488 542 squared".
The square of 488 542 is 238 673 285 764 because 488 542 × 488 542 = 488 5422 = 238 673 285 764.
As a consequence, 488 542 is the square root of 238 673 285 764.
The multiples of 488 542 are all integers evenly divisible by 488 542, that is all numbers such that the remainder of the division by 488 542 is zero. There are infinitely many multiples of 488 542. The smallest multiples of 488 542 are: