It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 134 209 is not a prime number.
For example, 134 209 can be divided by 103: 134 209 / 103 = 1 303.
For 134 209 to be a prime number, it would have been required that 134 209 has only two divisors, i.e., itself and 1.
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134 209 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 134 209 is about 366.345.
Thus, the square root of 134 209 is not an integer, and therefore 134 209 is not a square number.
The square of a number (here 134 209) is the result of the product of this number (134 209) by itself (i.e., 134 209 × 134 209); the square of 134 209 is sometimes called "raising 134 209 to the power 2", or "134 209 squared".
The square of 134 209 is 18 012 055 681 because 134 209 × 134 209 = 134 2092 = 18 012 055 681.
As a consequence, 134 209 is the square root of 18 012 055 681.
The multiples of 134 209 are all integers evenly divisible by 134 209, that is all numbers such that the remainder of the division by 134 209 is zero. There are infinitely many multiples of 134 209. The smallest multiples of 134 209 are: