42872585 has 16 divisors (see below), whose sum is σ = 60825600. Its totient is φ = 28383936.

The previous prime is 42872579. The next prime is 42872587. The reversal of 42872585 is 58527824.

It is not a de Polignac number, because 42872585 - 2⁸ = 42872329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42872587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20105 + ... + 22134.

It is an arithmetic number, because the mean of its divisors is an integer number (3801600).

Almost surely, 2^42872585 is an apocalyptic number.

It is an amenable number.

42872585 is a deficient number, since it is larger than the sum of its proper divisors (17953015).

42872585 is a wasteful number, since it uses less digits than its factorization.

42872585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42280.

The product of its digits is 179200, while the sum is 41.

The square root of 42872585 is about 6547.7160140006. The cubic root of 42872585 is about 349.9934284480.

The spelling of 42872585 in words is "forty-two million, eight hundred seventy-two thousand, five hundred eighty-five".