It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 212 is not a prime number.
For example, 240 212 can be divided by 2: 240 212 / 2 = 120 106.
For 240 212 to be a prime number, it would have been required that 240 212 has only two divisors, i.e., itself and 1.
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240 212 is an even number, because it is evenly divisible by 2: 240 212 / 2 = 120 106.
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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 240 212 is about 490.114.
Thus, the square root of 240 212 is not an integer, and therefore 240 212 is not a square number.
The square of a number (here 240 212) is the result of the product of this number (240 212) by itself (i.e., 240 212 × 240 212); the square of 240 212 is sometimes called "raising 240 212 to the power 2", or "240 212 squared".
The square of 240 212 is 57 701 804 944 because 240 212 × 240 212 = 240 2122 = 57 701 804 944.
As a consequence, 240 212 is the square root of 57 701 804 944.
The multiples of 240 212 are all integers evenly divisible by 240 212, that is all numbers such that the remainder of the division by 240 212 is zero. There are infinitely many multiples of 240 212. The smallest multiples of 240 212 are: