42809059 has 4 divisors (see below), whose sum is σ = 42921216. Its totient is φ = 42696904.

The previous prime is 42809051. The next prime is 42809083. The reversal of 42809059 is 95090824.

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 42809059 - 2³ = 42809051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42809051) 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, 55504 + ... + 56269.

It is an arithmetic number, because the mean of its divisors is an integer number (10730304).

Almost surely, 2^42809059 is an apocalyptic number.

42809059 is a deficient number, since it is larger than the sum of its proper divisors (112157).

42809059 is a wasteful number, since it uses less digits than its factorization.

42809059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112156.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 42809059 is about 6542.8632111637. The cubic root of 42809059 is about 349.8204766414.

The spelling of 42809059 in words is "forty-two million, eight hundred nine thousand, fifty-nine".