It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 242 013 is not a prime number.
For example, 242 013 can be divided by 3: 242 013 / 3 = 80 671.
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For 242 013 to be a prime number, it would have been required that 242 013 has only two divisors, i.e., itself and 1.
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242 013 is an odd number, because it is not evenly divisible by 2.
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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 242 013 is about 491.948.
Thus, the square root of 242 013 is not an integer, and therefore 242 013 is not a square number.
The square of a number (here 242 013) is the result of the product of this number (242 013) by itself (i.e., 242 013 × 242 013); the square of 242 013 is sometimes called "raising 242 013 to the power 2", or "242 013 squared".
The square of 242 013 is 58 570 292 169 because 242 013 × 242 013 = 242 0132 = 58 570 292 169.
As a consequence, 242 013 is the square root of 58 570 292 169.
The multiples of 242 013 are all integers evenly divisible by 242 013, that is all numbers such that the remainder of the division by 242 013 is zero. There are infinitely many multiples of 242 013. The smallest multiples of 242 013 are: