It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 742 408 is not a prime number.
For example, 742 408 can be divided by 2: 742 408 / 2 = 371 204.
For 742 408 to be a prime number, it would have been required that 742 408 has only two divisors, i.e., itself and 1.
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742 408 is an even number, because it is evenly divisible by 2: 742 408 / 2 = 371 204.
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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 742 408 is about 861.631.
Thus, the square root of 742 408 is not an integer, and therefore 742 408 is not a square number.
The square of a number (here 742 408) is the result of the product of this number (742 408) by itself (i.e., 742 408 × 742 408); the square of 742 408 is sometimes called "raising 742 408 to the power 2", or "742 408 squared".
The square of 742 408 is 551 169 638 464 because 742 408 × 742 408 = 742 4082 = 551 169 638 464.
As a consequence, 742 408 is the square root of 551 169 638 464.
The multiples of 742 408 are all integers evenly divisible by 742 408, that is all numbers such that the remainder of the division by 742 408 is zero. There are infinitely many multiples of 742 408. The smallest multiples of 742 408 are: