It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 442 is not a prime number.
For example, 490 442 can be divided by 2: 490 442 / 2 = 245 221.
For 490 442 to be a prime number, it would have been required that 490 442 has only two divisors, i.e., itself and 1.
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490 442 is an even number, because it is evenly divisible by 2: 490 442 / 2 = 245 221.
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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 490 442 is about 700.316.
Thus, the square root of 490 442 is not an integer, and therefore 490 442 is not a square number.
The square of a number (here 490 442) is the result of the product of this number (490 442) by itself (i.e., 490 442 × 490 442); the square of 490 442 is sometimes called "raising 490 442 to the power 2", or "490 442 squared".
The square of 490 442 is 240 533 355 364 because 490 442 × 490 442 = 490 4422 = 240 533 355 364.
As a consequence, 490 442 is the square root of 240 533 355 364.
The multiples of 490 442 are all integers evenly divisible by 490 442, that is all numbers such that the remainder of the division by 490 442 is zero. There are infinitely many multiples of 490 442. The smallest multiples of 490 442 are: