It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 129 429 009 is not a prime number.
For example, 129 429 009 can be divided by 3: 129 429 009 / 3 = 43 143 003.
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For 129 429 009 to be a prime number, it would have been required that 129 429 009 has only two divisors, i.e., itself and 1.
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129 429 009 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 129 429 009 is about 11 376.687.
Thus, the square root of 129 429 009 is not an integer, and therefore 129 429 009 is not a square number.
The square of a number (here 129 429 009) is the result of the product of this number (129 429 009) by itself (i.e., 129 429 009 × 129 429 009); the square of 129 429 009 is sometimes called "raising 129 429 009 to the power 2", or "129 429 009 squared".
The square of 129 429 009 is 16 751 868 370 722 080 because 129 429 009 × 129 429 009 = 129 429 0092 = 16 751 868 370 722 080.
As a consequence, 129 429 009 is the square root of 16 751 868 370 722 080.
129 429 009 is a number with 9 digits.
The multiples of 129 429 009 are all integers evenly divisible by 129 429 009, that is all numbers such that the remainder of the division by 129 429 009 is zero. There are infinitely many multiples of 129 429 009. The smallest multiples of 129 429 009 are: