It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 9 124 429 is not a prime number.
For example, 9 124 429 can be divided by 311: 9 124 429 / 311 = 29 339.
For 9 124 429 to be a prime number, it would have been required that 9 124 429 has only two divisors, i.e., itself and 1.
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9 124 429 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 9 124 429 is about 3 020.667.
Thus, the square root of 9 124 429 is not an integer, and therefore 9 124 429 is not a square number.
The square of a number (here 9 124 429) is the result of the product of this number (9 124 429) by itself (i.e., 9 124 429 × 9 124 429); the square of 9 124 429 is sometimes called "raising 9 124 429 to the power 2", or "9 124 429 squared".
The square of 9 124 429 is 83 255 204 576 041 because 9 124 429 × 9 124 429 = 9 124 4292 = 83 255 204 576 041.
As a consequence, 9 124 429 is the square root of 83 255 204 576 041.
The multiples of 9 124 429 are all integers evenly divisible by 9 124 429, that is all numbers such that the remainder of the division by 9 124 429 is zero. There are infinitely many multiples of 9 124 429. The smallest multiples of 9 124 429 are: