42321685 has 8 divisors (see below), whose sum is σ = 58041216. Its totient is φ = 29020560.

The previous prime is 42321659. The next prime is 42321731. The reversal of 42321685 is 58612324.

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

It is not a de Polignac number, because 42321685 - 2⁷ = 42321557 is a prime.

It is a super-2 number, since 2×42321685² = 3582250042478450, which contains 22 as substring.

It is a Duffinian number.

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, 604561 + ... + 604630.

It is an arithmetic number, because the mean of its divisors is an integer number (7255152).

Almost surely, 2^42321685 is an apocalyptic number.

It is an amenable number.

42321685 is a deficient number, since it is larger than the sum of its proper divisors (15719531).

42321685 is a wasteful number, since it uses less digits than its factorization.

42321685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209203.

The product of its digits is 11520, while the sum is 31.

The square root of 42321685 is about 6505.5118937713. The cubic root of 42321685 is about 348.4878572878.

The spelling of 42321685 in words is "forty-two million, three hundred twenty-one thousand, six hundred eighty-five".