It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 144 is not a prime number.
For example, 240 144 can be divided by 2: 240 144 / 2 = 120 072.
For 240 144 to be a prime number, it would have been required that 240 144 has only two divisors, i.e., itself and 1.
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240 144 is an even number, because it is evenly divisible by 2: 240 144 / 2 = 120 072.
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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 240 144 is about 490.045.
Thus, the square root of 240 144 is not an integer, and therefore 240 144 is not a square number.
The square of a number (here 240 144) is the result of the product of this number (240 144) by itself (i.e., 240 144 × 240 144); the square of 240 144 is sometimes called "raising 240 144 to the power 2", or "240 144 squared".
The square of 240 144 is 57 669 140 736 because 240 144 × 240 144 = 240 1442 = 57 669 140 736.
As a consequence, 240 144 is the square root of 57 669 140 736.
The multiples of 240 144 are all integers evenly divisible by 240 144, that is all numbers such that the remainder of the division by 240 144 is zero. There are infinitely many multiples of 240 144. The smallest multiples of 240 144 are: