42685178 has 8 divisors (see below), whose sum is σ = 64128672. Its totient is φ = 21308956.

The previous prime is 42685169. The next prime is 42685183. The reversal of 42685178 is 87158624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×42685178³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15200 + ... + 17787.

It is an arithmetic number, because the mean of its divisors is an integer number (8016084).

Almost surely, 2^42685178 is an apocalyptic number.

42685178 is a deficient number, since it is larger than the sum of its proper divisors (21443494).

42685178 is a wasteful number, since it uses less digits than its factorization.

42685178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33636.

The product of its digits is 107520, while the sum is 41.

The square root of 42685178 is about 6533.3894725479. The cubic root of 42685178 is about 349.4827133979.

The spelling of 42685178 in words is "forty-two million, six hundred eighty-five thousand, one hundred seventy-eight".