It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 942 is not a prime number.
For example, 240 942 can be divided by 2: 240 942 / 2 = 120 471.
For 240 942 to be a prime number, it would have been required that 240 942 has only two divisors, i.e., itself and 1.
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240 942 is an even number, because it is evenly divisible by 2: 240 942 / 2 = 120 471.
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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 240 942 is about 490.858.
Thus, the square root of 240 942 is not an integer, and therefore 240 942 is not a square number.
The square of a number (here 240 942) is the result of the product of this number (240 942) by itself (i.e., 240 942 × 240 942); the square of 240 942 is sometimes called "raising 240 942 to the power 2", or "240 942 squared".
The square of 240 942 is 58 053 047 364 because 240 942 × 240 942 = 240 9422 = 58 053 047 364.
As a consequence, 240 942 is the square root of 58 053 047 364.
The multiples of 240 942 are all integers evenly divisible by 240 942, that is all numbers such that the remainder of the division by 240 942 is zero. There are infinitely many multiples of 240 942. The smallest multiples of 240 942 are: