42489179 has 4 divisors (see below), whose sum is σ = 42676584. Its totient is φ = 42301776.

The previous prime is 42489163. The next prime is 42489191. The reversal of 42489179 is 97198424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42489179 - 2⁴ = 42489163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42489479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93362 + ... + 93815.

It is an arithmetic number, because the mean of its divisors is an integer number (10669146).

Almost surely, 2^42489179 is an apocalyptic number.

42489179 is a deficient number, since it is larger than the sum of its proper divisors (187405).

42489179 is a wasteful number, since it uses less digits than its factorization.

42489179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187404.

The product of its digits is 145152, while the sum is 44.

The square root of 42489179 is about 6518.3724195538. The cubic root of 42489179 is about 348.9469819819.

The spelling of 42489179 in words is "forty-two million, four hundred eighty-nine thousand, one hundred seventy-nine".