It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 149 138 is not a prime number.
For example, 149 138 can be divided by 2: 149 138 / 2 = 74 569.
For 149 138 to be a prime number, it would have been required that 149 138 has only two divisors, i.e., itself and 1.
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149 138 is an even number, because it is evenly divisible by 2: 149 138 / 2 = 74 569.
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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 149 138 is about 386.184.
Thus, the square root of 149 138 is not an integer, and therefore 149 138 is not a square number.
The square of a number (here 149 138) is the result of the product of this number (149 138) by itself (i.e., 149 138 × 149 138); the square of 149 138 is sometimes called "raising 149 138 to the power 2", or "149 138 squared".
The square of 149 138 is 22 242 143 044 because 149 138 × 149 138 = 149 1382 = 22 242 143 044.
As a consequence, 149 138 is the square root of 22 242 143 044.
The multiples of 149 138 are all integers evenly divisible by 149 138, that is all numbers such that the remainder of the division by 149 138 is zero. There are infinitely many multiples of 149 138. The smallest multiples of 149 138 are: