It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 422 is not a prime number.
For example, 490 422 can be divided by 2: 490 422 / 2 = 245 211.
For 490 422 to be a prime number, it would have been required that 490 422 has only two divisors, i.e., itself and 1.
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490 422 is an even number, because it is evenly divisible by 2: 490 422 / 2 = 245 211.
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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 490 422 is about 700.301.
Thus, the square root of 490 422 is not an integer, and therefore 490 422 is not a square number.
The square of a number (here 490 422) is the result of the product of this number (490 422) by itself (i.e., 490 422 × 490 422); the square of 490 422 is sometimes called "raising 490 422 to the power 2", or "490 422 squared".
The square of 490 422 is 240 513 738 084 because 490 422 × 490 422 = 490 4222 = 240 513 738 084.
As a consequence, 490 422 is the square root of 240 513 738 084.
The multiples of 490 422 are all integers evenly divisible by 490 422, that is all numbers such that the remainder of the division by 490 422 is zero. There are infinitely many multiples of 490 422. The smallest multiples of 490 422 are: