42003885 has 64 divisors (see below), whose sum is σ = 85929984. Its totient is φ = 17011200.

The previous prime is 42003877. The next prime is 42003943. The reversal of 42003885 is 58830024.

42003885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42003885 - 2³ = 42003877 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 46912 + ... + 47798.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^42003885 is an apocalyptic number.

It is an amenable number.

42003885 is an abundant number, since it is smaller than the sum of its proper divisors (43926099).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42003885 is a wasteful number, since it uses less digits than its factorization.

42003885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 42003885 is about 6481.0404257341. The cubic root of 42003885 is about 347.6133819070.

The spelling of 42003885 in words is "forty-two million, three thousand, eight hundred eighty-five".