42686878 has 16 divisors (see below), whose sum is σ = 69165936. Its totient is φ = 19641600.

The previous prime is 42686867. The next prime is 42686911. The reversal of 42686878 is 87868624.

It is a super-3 number, since 3×42686878³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6853 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (4322871).

Almost surely, 2^42686878 is an apocalyptic number.

42686878 is a deficient number, since it is larger than the sum of its proper divisors (26479058).

42686878 is a wasteful number, since it uses less digits than its factorization.

42686878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019.

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

The square root of 42686878 is about 6533.5195721755. The cubic root of 42686878 is about 349.4873528907.

The spelling of 42686878 in words is "forty-two million, six hundred eighty-six thousand, eight hundred seventy-eight".