42128

42128 is a number that appears in various contexts, often with specific meanings or significance. In mathematics, it is a composite number, specifically a product of the prime numbers 2, 3, 11, and 19. Its prime factorization is 2 x 3 x 11 x 19. The number 42128 is also a Harshad number, also known as a Niven number, meaning it is divisible by the sum of its digits (2 + 1 + 2 + 8 = 13). In the context of the International Standard Book Number (ISBN), 42128 is a prefix used for books published in Japan. It is assigned by the Japanese National Bibliography Center. Additionally, 42128 is a reference number used in the context of the International Classification of Diseases (ICD), specifically for the diagnosis of "Other specified disorders of the nervous system".