It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 402 072 is not a prime number.
For example, 402 072 can be divided by 2: 402 072 / 2 = 201 036.
For 402 072 to be a prime number, it would have been required that 402 072 has only two divisors, i.e., itself and 1.
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402 072 is an even number, because it is evenly divisible by 2: 402 072 / 2 = 201 036.
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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 402 072 is about 634.091.
Thus, the square root of 402 072 is not an integer, and therefore 402 072 is not a square number.
The square of a number (here 402 072) is the result of the product of this number (402 072) by itself (i.e., 402 072 × 402 072); the square of 402 072 is sometimes called "raising 402 072 to the power 2", or "402 072 squared".
The square of 402 072 is 161 661 893 184 because 402 072 × 402 072 = 402 0722 = 161 661 893 184.
As a consequence, 402 072 is the square root of 161 661 893 184.
The multiples of 402 072 are all integers evenly divisible by 402 072, that is all numbers such that the remainder of the division by 402 072 is zero. There are infinitely many multiples of 402 072. The smallest multiples of 402 072 are: