It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 422 is not a prime number.
For example, 240 422 can be divided by 2: 240 422 / 2 = 120 211.
For 240 422 to be a prime number, it would have been required that 240 422 has only two divisors, i.e., itself and 1.
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240 422 is an even number, because it is evenly divisible by 2: 240 422 / 2 = 120 211.
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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 240 422 is about 490.328.
Thus, the square root of 240 422 is not an integer, and therefore 240 422 is not a square number.
The square of a number (here 240 422) is the result of the product of this number (240 422) by itself (i.e., 240 422 × 240 422); the square of 240 422 is sometimes called "raising 240 422 to the power 2", or "240 422 squared".
The square of 240 422 is 57 802 738 084 because 240 422 × 240 422 = 240 4222 = 57 802 738 084.
As a consequence, 240 422 is the square root of 57 802 738 084.
The multiples of 240 422 are all integers evenly divisible by 240 422, that is all numbers such that the remainder of the division by 240 422 is zero. There are infinitely many multiples of 240 422. The smallest multiples of 240 422 are: