42685927 has 4 divisors (see below), whose sum is σ = 42993160. Its totient is φ = 42378696.

The previous prime is 42685921. The next prime is 42685939. The reversal of 42685927 is 72958624.

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

It is a cyclic number.

It is not a de Polignac number, because 42685927 - 2¹⁵ = 42653159 is a prime.

It is a super-3 number, since 3×42685927³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42685921) 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, 153408 + ... + 153685.

It is an arithmetic number, because the mean of its divisors is an integer number (10748290).

Almost surely, 2^42685927 is an apocalyptic number.

42685927 is a deficient number, since it is larger than the sum of its proper divisors (307233).

42685927 is a wasteful number, since it uses less digits than its factorization.

42685927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307232.

The product of its digits is 241920, while the sum is 43.

The square root of 42685927 is about 6533.4467932325. The cubic root of 42685927 is about 349.4847575190.

The spelling of 42685927 in words is "forty-two million, six hundred eighty-five thousand, nine hundred twenty-seven".