It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 742 726 009 is not a prime number.
For example, 742 726 009 can be divided by 27 253: 742 726 009 / 27253 = 27 253.
For 742 726 009 to be a prime number, it would have been required that 742 726 009 has only two divisors, i.e., itself and 1.
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742 726 009 is an odd number, because it is not evenly divisible by 2.
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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 742 726 009 is 27 253.
Therefore, the square root of 742 726 009 is an integer, and as a consequence 742 726 009 is a perfect square.
As a consequence, 27 253 is the square root of 742 726 009.
The square of a number (here 742 726 009) is the result of the product of this number (742 726 009) by itself (i.e., 742 726 009 × 742 726 009); the square of 742 726 009 is sometimes called "raising 742 726 009 to the power 2", or "742 726 009 squared".
The square of 742 726 009 is 551 641 924 445 068 096 because 742 726 009 × 742 726 009 = 742 726 0092 = 551 641 924 445 068 096.
As a consequence, 742 726 009 is the square root of 551 641 924 445 068 096.
742 726 009 is a number with 9 digits.
The multiples of 742 726 009 are all integers evenly divisible by 742 726 009, that is all numbers such that the remainder of the division by 742 726 009 is zero. There are infinitely many multiples of 742 726 009. The smallest multiples of 742 726 009 are: