It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 748 642 is not a prime number.
For example, 748 642 can be divided by 2: 748 642 / 2 = 374 321.
For 748 642 to be a prime number, it would have been required that 748 642 has only two divisors, i.e., itself and 1.
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748 642 is an even number, because it is evenly divisible by 2: 748 642 / 2 = 374 321.
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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 748 642 is about 865.241.
Thus, the square root of 748 642 is not an integer, and therefore 748 642 is not a square number.
The square of a number (here 748 642) is the result of the product of this number (748 642) by itself (i.e., 748 642 × 748 642); the square of 748 642 is sometimes called "raising 748 642 to the power 2", or "748 642 squared".
The square of 748 642 is 560 464 844 164 because 748 642 × 748 642 = 748 6422 = 560 464 844 164.
As a consequence, 748 642 is the square root of 560 464 844 164.
The multiples of 748 642 are all integers evenly divisible by 748 642, that is all numbers such that the remainder of the division by 748 642 is zero. There are infinitely many multiples of 748 642. The smallest multiples of 748 642 are: