It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 742 658 is not a prime number.
For example, 742 658 can be divided by 2: 742 658 / 2 = 371 329.
For 742 658 to be a prime number, it would have been required that 742 658 has only two divisors, i.e., itself and 1.
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742 658 is an even number, because it is evenly divisible by 2: 742 658 / 2 = 371 329.
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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 742 658 is about 861.776.
Thus, the square root of 742 658 is not an integer, and therefore 742 658 is not a square number.
The square of a number (here 742 658) is the result of the product of this number (742 658) by itself (i.e., 742 658 × 742 658); the square of 742 658 is sometimes called "raising 742 658 to the power 2", or "742 658 squared".
The square of 742 658 is 551 540 904 964 because 742 658 × 742 658 = 742 6582 = 551 540 904 964.
As a consequence, 742 658 is the square root of 551 540 904 964.
The multiples of 742 658 are all integers evenly divisible by 742 658, that is all numbers such that the remainder of the division by 742 658 is zero. There are infinitely many multiples of 742 658. The smallest multiples of 742 658 are: