42869871 has 64 divisors (see below), whose sum is σ = 74649600. Its totient is φ = 24040800.

The previous prime is 42869863. The next prime is 42869873. The reversal of 42869871 is 17896824.

42869871 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 42869871 - 2³ = 42869863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42869873) 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 63 ways as a sum of consecutive naturals, for example, 400600 + ... + 400706.

It is an arithmetic number, because the mean of its divisors is an integer number (1166400).

Almost surely, 2^42869871 is an apocalyptic number.

42869871 is a deficient number, since it is larger than the sum of its proper divisors (31779729).

42869871 is a wasteful number, since it uses less digits than its factorization.

42869871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 211 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 42869871 is about 6547.5087628807. The cubic root of 42869871 is about 349.9860429809.

The spelling of 42869871 in words is "forty-two million, eight hundred sixty-nine thousand, eight hundred seventy-one".