42887 has 4 divisors (see below), whose sum is σ = 46200. Its totient is φ = 39576.

The previous prime is 42863. The next prime is 42899. The reversal of 42887 is 78824.

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

It is a cyclic number.

It is not a de Polignac number, because 42887 - 2¹⁰ = 41863 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42887.

It is not an unprimeable number, because it can be changed into a prime (42187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (11550).

2⁴²⁸⁸⁷ is an apocalyptic number.

42887 is a deficient number, since it is larger than the sum of its proper divisors (3313).

42887 is a wasteful number, since it uses less digits than its factorization.

42887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

The product of its digits is 3584, while the sum is 29.

The square root of 42887 is about 207.0917670985. The cubic root of 42887 is about 35.0032650015.

Subtracting 42887 from its reverse (78824), we obtain a cube (35937 = 33³).

It can be divided in two parts, 428 and 87, that added together give a palindrome (515).

The spelling of 42887 in words is "forty-two thousand, eight hundred eighty-seven".