It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 998 is not a prime number.
For example, 240 998 can be divided by 2: 240 998 / 2 = 120 499.
For 240 998 to be a prime number, it would have been required that 240 998 has only two divisors, i.e., itself and 1.
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240 998 is an even number, because it is evenly divisible by 2: 240 998 / 2 = 120 499.
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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 240 998 is about 490.915.
Thus, the square root of 240 998 is not an integer, and therefore 240 998 is not a square number.
The square of a number (here 240 998) is the result of the product of this number (240 998) by itself (i.e., 240 998 × 240 998); the square of 240 998 is sometimes called "raising 240 998 to the power 2", or "240 998 squared".
The square of 240 998 is 58 080 036 004 because 240 998 × 240 998 = 240 9982 = 58 080 036 004.
As a consequence, 240 998 is the square root of 58 080 036 004.
The multiples of 240 998 are all integers evenly divisible by 240 998, that is all numbers such that the remainder of the division by 240 998 is zero. There are infinitely many multiples of 240 998. The smallest multiples of 240 998 are: