It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 494 342 is not a prime number.
For example, 494 342 can be divided by 2: 494 342 / 2 = 247 171.
For 494 342 to be a prime number, it would have been required that 494 342 has only two divisors, i.e., itself and 1.
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494 342 is an even number, because it is evenly divisible by 2: 494 342 / 2 = 247 171.
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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 494 342 is about 703.095.
Thus, the square root of 494 342 is not an integer, and therefore 494 342 is not a square number.
The square of a number (here 494 342) is the result of the product of this number (494 342) by itself (i.e., 494 342 × 494 342); the square of 494 342 is sometimes called "raising 494 342 to the power 2", or "494 342 squared".
The square of 494 342 is 244 374 012 964 because 494 342 × 494 342 = 494 3422 = 244 374 012 964.
As a consequence, 494 342 is the square root of 244 374 012 964.
The multiples of 494 342 are all integers evenly divisible by 494 342, that is all numbers such that the remainder of the division by 494 342 is zero. There are infinitely many multiples of 494 342. The smallest multiples of 494 342 are: