It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 742 648 is not a prime number.
For example, 742 648 can be divided by 2: 742 648 / 2 = 371 324.
For 742 648 to be a prime number, it would have been required that 742 648 has only two divisors, i.e., itself and 1.
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742 648 is an even number, because it is evenly divisible by 2: 742 648 / 2 = 371 324.
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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 742 648 is about 861.770.
Thus, the square root of 742 648 is not an integer, and therefore 742 648 is not a square number.
The square of a number (here 742 648) is the result of the product of this number (742 648) by itself (i.e., 742 648 × 742 648); the square of 742 648 is sometimes called "raising 742 648 to the power 2", or "742 648 squared".
The square of 742 648 is 551 526 051 904 because 742 648 × 742 648 = 742 6482 = 551 526 051 904.
As a consequence, 742 648 is the square root of 551 526 051 904.
The multiples of 742 648 are all integers evenly divisible by 742 648, that is all numbers such that the remainder of the division by 742 648 is zero. There are infinitely many multiples of 742 648. The smallest multiples of 742 648 are: