42768687 has 16 divisors (see below), whose sum is σ = 62455680. Its totient is φ = 25871712.

The previous prime is 42768679. The next prime is 42768701. The reversal of 42768687 is 78686724.

42768687 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 42768687 - 2³ = 42768679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42768667) 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 15 ways as a sum of consecutive naturals, for example, 6993 + ... + 11594.

It is an arithmetic number, because the mean of its divisors is an integer number (3903480).

Almost surely, 2^42768687 is an apocalyptic number.

42768687 is a deficient number, since it is larger than the sum of its proper divisors (19686993).

42768687 is a wasteful number, since it uses less digits than its factorization.

42768687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18662.

The product of its digits is 903168, while the sum is 48.

The square root of 42768687 is about 6539.7772897859. Note that the first 3 decimals coincide. The cubic root of 42768687 is about 349.7104734895.

The spelling of 42768687 in words is "forty-two million, seven hundred sixty-eight thousand, six hundred eighty-seven".