It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 467 is not a prime number.
For example, 402 467 can be divided by 13: 402 467 / 13 = 30 959.
For 402 467 to be a prime number, it would have been required that 402 467 has only two divisors, i.e., itself and 1.
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402 467 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 402 467 is about 634.403.
Thus, the square root of 402 467 is not an integer, and therefore 402 467 is not a square number.
The square of a number (here 402 467) is the result of the product of this number (402 467) by itself (i.e., 402 467 × 402 467); the square of 402 467 is sometimes called "raising 402 467 to the power 2", or "402 467 squared".
The square of 402 467 is 161 979 686 089 because 402 467 × 402 467 = 402 4672 = 161 979 686 089.
As a consequence, 402 467 is the square root of 161 979 686 089.
The multiples of 402 467 are all integers evenly divisible by 402 467, that is all numbers such that the remainder of the division by 402 467 is zero. There are infinitely many multiples of 402 467. The smallest multiples of 402 467 are: