It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 749 642 is not a prime number.
For example, 749 642 can be divided by 2: 749 642 / 2 = 374 821.
For 749 642 to be a prime number, it would have been required that 749 642 has only two divisors, i.e., itself and 1.
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749 642 is an even number, because it is evenly divisible by 2: 749 642 / 2 = 374 821.
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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 749 642 is about 865.819.
Thus, the square root of 749 642 is not an integer, and therefore 749 642 is not a square number.
The square of a number (here 749 642) is the result of the product of this number (749 642) by itself (i.e., 749 642 × 749 642); the square of 749 642 is sometimes called "raising 749 642 to the power 2", or "749 642 squared".
The square of 749 642 is 561 963 128 164 because 749 642 × 749 642 = 749 6422 = 561 963 128 164.
As a consequence, 749 642 is the square root of 561 963 128 164.
The multiples of 749 642 are all integers evenly divisible by 749 642, that is all numbers such that the remainder of the division by 749 642 is zero. There are infinitely many multiples of 749 642. The smallest multiples of 749 642 are: