It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 642 012 002 is not a prime number.
For example, 642 012 002 can be divided by 2: 642 012 002 / 2 = 321 006 001.
For 642 012 002 to be a prime number, it would have been required that 642 012 002 has only two divisors, i.e., itself and 1.
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642 012 002 is an even number, because it is evenly divisible by 2: 642 012 002 / 2 = 321 006 001.
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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 642 012 002 is about 25 337.956.
Thus, the square root of 642 012 002 is not an integer, and therefore 642 012 002 is not a square number.
The square of a number (here 642 012 002) is the result of the product of this number (642 012 002) by itself (i.e., 642 012 002 × 642 012 002); the square of 642 012 002 is sometimes called "raising 642 012 002 to the power 2", or "642 012 002 squared".
The square of 642 012 002 is 412 179 410 712 048 000 because 642 012 002 × 642 012 002 = 642 012 0022 = 412 179 410 712 048 000.
As a consequence, 642 012 002 is the square root of 412 179 410 712 048 000.
642 012 002 is a number with 9 digits.
The multiples of 642 012 002 are all integers evenly divisible by 642 012 002, that is all numbers such that the remainder of the division by 642 012 002 is zero. There are infinitely many multiples of 642 012 002. The smallest multiples of 642 012 002 are: