It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 242 456 042 is not a prime number.
For example, 242 456 042 can be divided by 2: 242 456 042 / 2 = 121 228 021.
For 242 456 042 to be a prime number, it would have been required that 242 456 042 has only two divisors, i.e., itself and 1.
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242 456 042 is an even number, because it is evenly divisible by 2: 242 456 042 / 2 = 121 228 021.
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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 242 456 042 is about 15 571.000.
Thus, the square root of 242 456 042 is not an integer, and therefore 242 456 042 is not a square number.
The square of a number (here 242 456 042) is the result of the product of this number (242 456 042) by itself (i.e., 242 456 042 × 242 456 042); the square of 242 456 042 is sometimes called "raising 242 456 042 to the power 2", or "242 456 042 squared".
The square of 242 456 042 is 58 784 932 302 305 760 because 242 456 042 × 242 456 042 = 242 456 0422 = 58 784 932 302 305 760.
As a consequence, 242 456 042 is the square root of 58 784 932 302 305 760.
242 456 042 is a number with 9 digits.
The multiples of 242 456 042 are all integers evenly divisible by 242 456 042, that is all numbers such that the remainder of the division by 242 456 042 is zero. There are infinitely many multiples of 242 456 042. The smallest multiples of 242 456 042 are: