42686268 has 12 divisors (see below), whose sum is σ = 99601320. Its totient is φ = 14228752.

The previous prime is 42686263. The next prime is 42686297. The reversal of 42686268 is 86268624.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×42686268³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42686261) 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, 1778583 + ... + 1778606.

It is an arithmetic number, because the mean of its divisors is an integer number (8300110).

Almost surely, 2^42686268 is an apocalyptic number.

It is an amenable number.

42686268 is an abundant number, since it is smaller than the sum of its proper divisors (56915052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42686268 is a wasteful number, since it uses less digits than its factorization.

42686268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557196 (or 3557194 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 42686268 is about 6533.4728896660. The cubic root of 42686268 is about 349.4856881456.

The spelling of 42686268 in words is "forty-two million, six hundred eighty-six thousand, two hundred sixty-eight".