It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 42 302 023 is not a prime number.
For example, 42 302 023 can be divided by 2 389: 42 302 023 / 2389 = 17 707.
For 42 302 023 to be a prime number, it would have been required that 42 302 023 has only two divisors, i.e., itself and 1.
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42 302 023 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 42 302 023 is about 6 504.001.
Thus, the square root of 42 302 023 is not an integer, and therefore 42 302 023 is not a square number.
The square of a number (here 42 302 023) is the result of the product of this number (42 302 023) by itself (i.e., 42 302 023 × 42 302 023); the square of 42 302 023 is sometimes called "raising 42 302 023 to the power 2", or "42 302 023 squared".
The square of 42 302 023 is 1 789 461 149 892 529 because 42 302 023 × 42 302 023 = 42 302 0232 = 1 789 461 149 892 529.
As a consequence, 42 302 023 is the square root of 1 789 461 149 892 529.
42 302 023 is a number with 8 digits.
The multiples of 42 302 023 are all integers evenly divisible by 42 302 023, that is all numbers such that the remainder of the division by 42 302 023 is zero. There are infinitely many multiples of 42 302 023. The smallest multiples of 42 302 023 are: