It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 492 998 is not a prime number.
For example, 492 998 can be divided by 2: 492 998 / 2 = 246 499.
For 492 998 to be a prime number, it would have been required that 492 998 has only two divisors, i.e., itself and 1.
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492 998 is an even number, because it is evenly divisible by 2: 492 998 / 2 = 246 499.
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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 492 998 is about 702.138.
Thus, the square root of 492 998 is not an integer, and therefore 492 998 is not a square number.
The square of a number (here 492 998) is the result of the product of this number (492 998) by itself (i.e., 492 998 × 492 998); the square of 492 998 is sometimes called "raising 492 998 to the power 2", or "492 998 squared".
The square of 492 998 is 243 047 028 004 because 492 998 × 492 998 = 492 9982 = 243 047 028 004.
As a consequence, 492 998 is the square root of 243 047 028 004.
The multiples of 492 998 are all integers evenly divisible by 492 998, that is all numbers such that the remainder of the division by 492 998 is zero. There are infinitely many multiples of 492 998. The smallest multiples of 492 998 are: