It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 118 is not a prime number.
For example, 490 118 can be divided by 2: 490 118 / 2 = 245 059.
For 490 118 to be a prime number, it would have been required that 490 118 has only two divisors, i.e., itself and 1.
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490 118 is an even number, because it is evenly divisible by 2: 490 118 / 2 = 245 059.
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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 490 118 is about 700.084.
Thus, the square root of 490 118 is not an integer, and therefore 490 118 is not a square number.
The square of a number (here 490 118) is the result of the product of this number (490 118) by itself (i.e., 490 118 × 490 118); the square of 490 118 is sometimes called "raising 490 118 to the power 2", or "490 118 squared".
The square of 490 118 is 240 215 653 924 because 490 118 × 490 118 = 490 1182 = 240 215 653 924.
As a consequence, 490 118 is the square root of 240 215 653 924.
The multiples of 490 118 are all integers evenly divisible by 490 118, that is all numbers such that the remainder of the division by 490 118 is zero. There are infinitely many multiples of 490 118. The smallest multiples of 490 118 are: