42538867 has 4 divisors (see below), whose sum is σ = 48615856. Its totient is φ = 36461880.

The previous prime is 42538861. The next prime is 42538871. The reversal of 42538867 is 76883524.

42538867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-42538867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42538861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038484 + ... + 3038497.

It is an arithmetic number, because the mean of its divisors is an integer number (12153964).

Almost surely, 2^42538867 is an apocalyptic number.

42538867 is a deficient number, since it is larger than the sum of its proper divisors (6076989).

42538867 is an equidigital number, since it uses as much as digits as its factorization.

42538867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076988.

The product of its digits is 322560, while the sum is 43.

The square root of 42538867 is about 6522.1826868005. The cubic root of 42538867 is about 349.0829516863.

The spelling of 42538867 in words is "forty-two million, five hundred thirty-eight thousand, eight hundred sixty-seven".