42875887 has 16 divisors (see below), whose sum is σ = 48288960. Its totient is φ = 37852672.

The previous prime is 42875881. The next prime is 42875909. The reversal of 42875887 is 78857824.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42875887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42875887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42875881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19689 + ... + 21757.

It is an arithmetic number, because the mean of its divisors is an integer number (3018060).

Almost surely, 2^42875887 is an apocalyptic number.

42875887 is a deficient number, since it is larger than the sum of its proper divisors (5413073).

42875887 is a wasteful number, since it uses less digits than its factorization.

42875887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its digits is 1003520, while the sum is 49.

The square root of 42875887 is about 6547.9681581388. The cubic root of 42875887 is about 350.0024135888.

The spelling of 42875887 in words is "forty-two million, eight hundred seventy-five thousand, eight hundred eighty-seven".