It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 874 is not a prime number.
For example, 240 874 can be divided by 2: 240 874 / 2 = 120 437.
For 240 874 to be a prime number, it would have been required that 240 874 has only two divisors, i.e., itself and 1.
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240 874 is an even number, because it is evenly divisible by 2: 240 874 / 2 = 120 437.
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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 240 874 is about 490.789.
Thus, the square root of 240 874 is not an integer, and therefore 240 874 is not a square number.
The square of a number (here 240 874) is the result of the product of this number (240 874) by itself (i.e., 240 874 × 240 874); the square of 240 874 is sometimes called "raising 240 874 to the power 2", or "240 874 squared".
The square of 240 874 is 58 020 283 876 because 240 874 × 240 874 = 240 8742 = 58 020 283 876.
As a consequence, 240 874 is the square root of 58 020 283 876.
The multiples of 240 874 are all integers evenly divisible by 240 874, that is all numbers such that the remainder of the division by 240 874 is zero. There are infinitely many multiples of 240 874. The smallest multiples of 240 874 are: