42589505 has 32 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 26588160.

The previous prime is 42589501. The next prime is 42589511. The reversal of 42589505 is 50598524.

It is not a de Polignac number, because 42589505 - 2² = 42589501 is a prime.

It is a super-2 number, since 2×42589505² = 3627731872290050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42589501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17291 + ... + 19599.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 2^42589505 is an apocalyptic number.

It is an amenable number.

42589505 is a deficient number, since it is larger than the sum of its proper divisors (21277375).

42589505 is a wasteful number, since it uses less digits than its factorization.

42589505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 42589505 is about 6526.0635148610. The cubic root of 42589505 is about 349.2214121442.

The spelling of 42589505 in words is "forty-two million, five hundred eighty-nine thousand, five hundred five".