42686836 has 24 divisors (see below), whose sum is σ = 76495104. Its totient is φ = 20835360.

The previous prime is 42686821. The next prime is 42686837. The reversal of 42686836 is 63868624.

42686836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×42686836³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42686792 and 42686801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42686837) 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 7 ways as a sum of consecutive naturals, for example, 57081 + ... + 57823.

It is an arithmetic number, because the mean of its divisors is an integer number (3187296).

Almost surely, 2^42686836 is an apocalyptic number.

It is an amenable number.

42686836 is a deficient number, since it is larger than the sum of its proper divisors (33808268).

42686836 is a wasteful number, since it uses less digits than its factorization.

42686836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 1069 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 42686836 is about 6533.5163579806. The cubic root of 42686836 is about 349.4872382694.

The spelling of 42686836 in words is "forty-two million, six hundred eighty-six thousand, eight hundred thirty-six".