It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 198 is not a prime number.
For example, 240 198 can be divided by 2: 240 198 / 2 = 120 099.
For 240 198 to be a prime number, it would have been required that 240 198 has only two divisors, i.e., itself and 1.
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240 198 is an even number, because it is evenly divisible by 2: 240 198 / 2 = 120 099.
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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 240 198 is about 490.100.
Thus, the square root of 240 198 is not an integer, and therefore 240 198 is not a square number.
The square of a number (here 240 198) is the result of the product of this number (240 198) by itself (i.e., 240 198 × 240 198); the square of 240 198 is sometimes called "raising 240 198 to the power 2", or "240 198 squared".
The square of 240 198 is 57 695 079 204 because 240 198 × 240 198 = 240 1982 = 57 695 079 204.
As a consequence, 240 198 is the square root of 57 695 079 204.
The multiples of 240 198 are all integers evenly divisible by 240 198, that is all numbers such that the remainder of the division by 240 198 is zero. There are infinitely many multiples of 240 198. The smallest multiples of 240 198 are: