It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 749 is not a prime number.
For example, 240 749 can be divided by 19: 240 749 / 19 = 12 671.
For 240 749 to be a prime number, it would have been required that 240 749 has only two divisors, i.e., itself and 1.
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240 749 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 240 749 is about 490.662.
Thus, the square root of 240 749 is not an integer, and therefore 240 749 is not a square number.
The square of a number (here 240 749) is the result of the product of this number (240 749) by itself (i.e., 240 749 × 240 749); the square of 240 749 is sometimes called "raising 240 749 to the power 2", or "240 749 squared".
The square of 240 749 is 57 960 081 001 because 240 749 × 240 749 = 240 7492 = 57 960 081 001.
As a consequence, 240 749 is the square root of 57 960 081 001.
The multiples of 240 749 are all integers evenly divisible by 240 749, that is all numbers such that the remainder of the division by 240 749 is zero. There are infinitely many multiples of 240 749. The smallest multiples of 240 749 are: