It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 425 476 is not a prime number.
For example, 402 425 476 can be divided by 2: 402 425 476 / 2 = 201 212 738.
For 402 425 476 to be a prime number, it would have been required that 402 425 476 has only two divisors, i.e., itself and 1.
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402 425 476 is an even number, because it is evenly divisible by 2: 402 425 476 / 2 = 201 212 738.
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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 402 425 476 is about 20 060.545.
Thus, the square root of 402 425 476 is not an integer, and therefore 402 425 476 is not a square number.
The square of a number (here 402 425 476) is the result of the product of this number (402 425 476) by itself (i.e., 402 425 476 × 402 425 476); the square of 402 425 476 is sometimes called "raising 402 425 476 to the power 2", or "402 425 476 squared".
The square of 402 425 476 is 161 946 263 733 826 560 because 402 425 476 × 402 425 476 = 402 425 4762 = 161 946 263 733 826 560.
As a consequence, 402 425 476 is the square root of 161 946 263 733 826 560.
402 425 476 is a number with 9 digits.
The multiples of 402 425 476 are all integers evenly divisible by 402 425 476, that is all numbers such that the remainder of the division by 402 425 476 is zero. There are infinitely many multiples of 402 425 476. The smallest multiples of 402 425 476 are: