It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 13 249 742 is not a prime number.
For example, 13 249 742 can be divided by 2: 13 249 742 / 2 = 6 624 871.
For 13 249 742 to be a prime number, it would have been required that 13 249 742 has only two divisors, i.e., itself and 1.
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13 249 742 is an even number, because it is evenly divisible by 2: 13 249 742 / 2 = 6 624 871.
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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 13 249 742 is about 3 640.020.
Thus, the square root of 13 249 742 is not an integer, and therefore 13 249 742 is not a square number.
The square of a number (here 13 249 742) is the result of the product of this number (13 249 742) by itself (i.e., 13 249 742 × 13 249 742); the square of 13 249 742 is sometimes called "raising 13 249 742 to the power 2", or "13 249 742 squared".
The square of 13 249 742 is 175 555 663 066 564 because 13 249 742 × 13 249 742 = 13 249 7422 = 175 555 663 066 564.
As a consequence, 13 249 742 is the square root of 175 555 663 066 564.
13 249 742 is a number with 8 digits.
The multiples of 13 249 742 are all integers evenly divisible by 13 249 742, that is all numbers such that the remainder of the division by 13 249 742 is zero. There are infinitely many multiples of 13 249 742. The smallest multiples of 13 249 742 are: