It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 987 is not a prime number.
For example, 240 987 can be divided by 3: 240 987 / 3 = 80 329.
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For 240 987 to be a prime number, it would have been required that 240 987 has only two divisors, i.e., itself and 1.
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240 987 is an odd number, because it is not evenly divisible by 2.
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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 240 987 is about 490.904.
Thus, the square root of 240 987 is not an integer, and therefore 240 987 is not a square number.
The square of a number (here 240 987) is the result of the product of this number (240 987) by itself (i.e., 240 987 × 240 987); the square of 240 987 is sometimes called "raising 240 987 to the power 2", or "240 987 squared".
The square of 240 987 is 58 074 734 169 because 240 987 × 240 987 = 240 9872 = 58 074 734 169.
As a consequence, 240 987 is the square root of 58 074 734 169.
The multiples of 240 987 are all integers evenly divisible by 240 987, that is all numbers such that the remainder of the division by 240 987 is zero. There are infinitely many multiples of 240 987. The smallest multiples of 240 987 are: