It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 133 402 is not a prime number.
For example, 133 402 can be divided by 2: 133 402 / 2 = 66 701.
For 133 402 to be a prime number, it would have been required that 133 402 has only two divisors, i.e., itself and 1.
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133 402 is an even number, because it is evenly divisible by 2: 133 402 / 2 = 66 701.
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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 133 402 is about 365.242.
Thus, the square root of 133 402 is not an integer, and therefore 133 402 is not a square number.
The square of a number (here 133 402) is the result of the product of this number (133 402) by itself (i.e., 133 402 × 133 402); the square of 133 402 is sometimes called "raising 133 402 to the power 2", or "133 402 squared".
The square of 133 402 is 17 796 093 604 because 133 402 × 133 402 = 133 4022 = 17 796 093 604.
As a consequence, 133 402 is the square root of 17 796 093 604.
The multiples of 133 402 are all integers evenly divisible by 133 402, that is all numbers such that the remainder of the division by 133 402 is zero. There are infinitely many multiples of 133 402. The smallest multiples of 133 402 are: