It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 40 064 is not a prime number.
For example, 40 064 can be divided by 2: 40 064 / 2 = 20 032.
For 40 064 to be a prime number, it would have been required that 40 064 has only two divisors, i.e., itself and 1.
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40 064 is an even number, because it is evenly divisible by 2: 40 064 / 2 = 20 032.
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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 40 064 is about 200.160.
Thus, the square root of 40 064 is not an integer, and therefore 40 064 is not a square number.
The square of a number (here 40 064) is the result of the product of this number (40 064) by itself (i.e., 40 064 × 40 064); the square of 40 064 is sometimes called "raising 40 064 to the power 2", or "40 064 squared".
The square of 40 064 is 1 605 124 096 because 40 064 × 40 064 = 40 0642 = 1 605 124 096.
As a consequence, 40 064 is the square root of 1 605 124 096.
The multiples of 40 064 are all integers evenly divisible by 40 064, that is all numbers such that the remainder of the division by 40 064 is zero. There are infinitely many multiples of 40 064. The smallest multiples of 40 064 are: