It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 298 742 is not a prime number.
For example, 298 742 can be divided by 2: 298 742 / 2 = 149 371.
For 298 742 to be a prime number, it would have been required that 298 742 has only two divisors, i.e., itself and 1.
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298 742 is an even number, because it is evenly divisible by 2: 298 742 / 2 = 149 371.
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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 298 742 is about 546.573.
Thus, the square root of 298 742 is not an integer, and therefore 298 742 is not a square number.
The square of a number (here 298 742) is the result of the product of this number (298 742) by itself (i.e., 298 742 × 298 742); the square of 298 742 is sometimes called "raising 298 742 to the power 2", or "298 742 squared".
The square of 298 742 is 89 246 782 564 because 298 742 × 298 742 = 298 7422 = 89 246 782 564.
As a consequence, 298 742 is the square root of 89 246 782 564.
The multiples of 298 742 are all integers evenly divisible by 298 742, that is all numbers such that the remainder of the division by 298 742 is zero. There are infinitely many multiples of 298 742. The smallest multiples of 298 742 are: