It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 135 378 012 is not a prime number.
For example, 135 378 012 can be divided by 2: 135 378 012 / 2 = 67 689 006.
For 135 378 012 to be a prime number, it would have been required that 135 378 012 has only two divisors, i.e., itself and 1.
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135 378 012 is an even number, because it is evenly divisible by 2: 135 378 012 / 2 = 67 689 006.
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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 135 378 012 is about 11 635.206.
Thus, the square root of 135 378 012 is not an integer, and therefore 135 378 012 is not a square number.
The square of a number (here 135 378 012) is the result of the product of this number (135 378 012) by itself (i.e., 135 378 012 × 135 378 012); the square of 135 378 012 is sometimes called "raising 135 378 012 to the power 2", or "135 378 012 squared".
The square of 135 378 012 is 18 327 206 133 072 144 because 135 378 012 × 135 378 012 = 135 378 0122 = 18 327 206 133 072 144.
As a consequence, 135 378 012 is the square root of 18 327 206 133 072 144.
135 378 012 is a number with 9 digits.
The multiples of 135 378 012 are all integers evenly divisible by 135 378 012, that is all numbers such that the remainder of the division by 135 378 012 is zero. There are infinitely many multiples of 135 378 012. The smallest multiples of 135 378 012 are: