It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 121 009 is not a prime number.
For example, 121 009 can be divided by 7: 121 009 / 7 = 17 287.
For 121 009 to be a prime number, it would have been required that 121 009 has only two divisors, i.e., itself and 1.
Find out more:
121 009 is an odd number, because it is not evenly divisible by 2.
Find out more:
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 121 009 is about 347.863.
Thus, the square root of 121 009 is not an integer, and therefore 121 009 is not a square number.
The square of a number (here 121 009) is the result of the product of this number (121 009) by itself (i.e., 121 009 × 121 009); the square of 121 009 is sometimes called "raising 121 009 to the power 2", or "121 009 squared".
The square of 121 009 is 14 643 178 081 because 121 009 × 121 009 = 121 0092 = 14 643 178 081.
As a consequence, 121 009 is the square root of 14 643 178 081.
The multiples of 121 009 are all integers evenly divisible by 121 009, that is all numbers such that the remainder of the division by 121 009 is zero. There are infinitely many multiples of 121 009. The smallest multiples of 121 009 are: