It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 116 002 is not a prime number.
For example, 402 116 002 can be divided by 2: 402 116 002 / 2 = 201 058 001.
For 402 116 002 to be a prime number, it would have been required that 402 116 002 has only two divisors, i.e., itself and 1.
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402 116 002 is an even number, because it is evenly divisible by 2: 402 116 002 / 2 = 201 058 001.
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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 402 116 002 is about 20 052.830.
Thus, the square root of 402 116 002 is not an integer, and therefore 402 116 002 is not a square number.
The square of a number (here 402 116 002) is the result of the product of this number (402 116 002) by itself (i.e., 402 116 002 × 402 116 002); the square of 402 116 002 is sometimes called "raising 402 116 002 to the power 2", or "402 116 002 squared".
The square of 402 116 002 is 161 697 279 064 464 000 because 402 116 002 × 402 116 002 = 402 116 0022 = 161 697 279 064 464 000.
As a consequence, 402 116 002 is the square root of 161 697 279 064 464 000.
402 116 002 is a number with 9 digits.
The multiples of 402 116 002 are all integers evenly divisible by 402 116 002, that is all numbers such that the remainder of the division by 402 116 002 is zero. There are infinitely many multiples of 402 116 002. The smallest multiples of 402 116 002 are: