42866878 has 4 divisors (see below), whose sum is σ = 64300320. Its totient is φ = 21433438.

The previous prime is 42866839. The next prime is 42866891. The reversal of 42866878 is 87866824.

42866878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 as a sum of consecutive naturals, namely, 10716718 + ... + 10716721.

It is an arithmetic number, because the mean of its divisors is an integer number (16075080).

Almost surely, 2^42866878 is an apocalyptic number.

42866878 is a deficient number, since it is larger than the sum of its proper divisors (21433442).

42866878 is a wasteful number, since it uses less digits than its factorization.

42866878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21433441.

The product of its digits is 1032192, while the sum is 49.

The square root of 42866878 is about 6547.2801986779. The cubic root of 42866878 is about 349.9778979240.

The spelling of 42866878 in words is "forty-two million, eight hundred sixty-six thousand, eight hundred seventy-eight".