It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 000 488 is not a prime number.
For example, 402 000 488 can be divided by 2: 402 000 488 / 2 = 201 000 244.
For 402 000 488 to be a prime number, it would have been required that 402 000 488 has only two divisors, i.e., itself and 1.
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402 000 488 is an even number, because it is evenly divisible by 2: 402 000 488 / 2 = 201 000 244.
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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 402 000 488 is about 20 049.950.
Thus, the square root of 402 000 488 is not an integer, and therefore 402 000 488 is not a square number.
The square of a number (here 402 000 488) is the result of the product of this number (402 000 488) by itself (i.e., 402 000 488 × 402 000 488); the square of 402 000 488 is sometimes called "raising 402 000 488 to the power 2", or "402 000 488 squared".
The square of 402 000 488 is 161 604 392 352 238 144 because 402 000 488 × 402 000 488 = 402 000 4882 = 161 604 392 352 238 144.
As a consequence, 402 000 488 is the square root of 161 604 392 352 238 144.
402 000 488 is a number with 9 digits.
The multiples of 402 000 488 are all integers evenly divisible by 402 000 488, that is all numbers such that the remainder of the division by 402 000 488 is zero. There are infinitely many multiples of 402 000 488. The smallest multiples of 402 000 488 are: