The numbers 2, 3, and 4 are basic integers that represent quantities. 2 is the smallest and the first even number, often associated with pairs, like a pair of shoes. 3 is the first odd number and is often linked to concepts like the "rule of three" in writing and storytelling. 4 is the first composite number, meaning it can be divided by numbers other than itself and one. It is also the first square number, as it is the result of multiplying 2 by itself. These numbers form the foundation of basic arithmetic and are essential in various mathematical concepts.