It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 137 478 242 is not a prime number.
For example, 137 478 242 can be divided by 2: 137 478 242 / 2 = 68 739 121.
For 137 478 242 to be a prime number, it would have been required that 137 478 242 has only two divisors, i.e., itself and 1.
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137 478 242 is an even number, because it is evenly divisible by 2: 137 478 242 / 2 = 68 739 121.
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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 137 478 242 is about 11 725.112.
Thus, the square root of 137 478 242 is not an integer, and therefore 137 478 242 is not a square number.
The square of a number (here 137 478 242) is the result of the product of this number (137 478 242) by itself (i.e., 137 478 242 × 137 478 242); the square of 137 478 242 is sometimes called "raising 137 478 242 to the power 2", or "137 478 242 squared".
The square of 137 478 242 is 18 900 267 023 410 564 because 137 478 242 × 137 478 242 = 137 478 2422 = 18 900 267 023 410 564.
As a consequence, 137 478 242 is the square root of 18 900 267 023 410 564.
137 478 242 is a number with 9 digits.
The multiples of 137 478 242 are all integers evenly divisible by 137 478 242, that is all numbers such that the remainder of the division by 137 478 242 is zero. There are infinitely many multiples of 137 478 242. The smallest multiples of 137 478 242 are: