It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 189 is not a prime number.
For example, 240 189 can be divided by 3: 240 189 / 3 = 80 063.
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For 240 189 to be a prime number, it would have been required that 240 189 has only two divisors, i.e., itself and 1.
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240 189 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 240 189 is about 490.091.
Thus, the square root of 240 189 is not an integer, and therefore 240 189 is not a square number.
The square of a number (here 240 189) is the result of the product of this number (240 189) by itself (i.e., 240 189 × 240 189); the square of 240 189 is sometimes called "raising 240 189 to the power 2", or "240 189 squared".
The square of 240 189 is 57 690 755 721 because 240 189 × 240 189 = 240 1892 = 57 690 755 721.
As a consequence, 240 189 is the square root of 57 690 755 721.
The multiples of 240 189 are all integers evenly divisible by 240 189, that is all numbers such that the remainder of the division by 240 189 is zero. There are infinitely many multiples of 240 189. The smallest multiples of 240 189 are: