42942686 has 8 divisors (see below), whose sum is σ = 64547760. Its totient is φ = 21426768.

The previous prime is 42942677. The next prime is 42942727. The reversal of 42942686 is 68624924.

42942686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21071 + ... + 23018.

It is an arithmetic number, because the mean of its divisors is an integer number (8068470).

Almost surely, 2^42942686 is an apocalyptic number.

42942686 is a deficient number, since it is larger than the sum of its proper divisors (21605074).

42942686 is a wasteful number, since it uses less digits than its factorization.

42942686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44578.

The product of its digits is 165888, while the sum is 41.

The square root of 42942686 is about 6553.0669155747. The cubic root of 42942686 is about 350.1840827564.

The spelling of 42942686 in words is "forty-two million, nine hundred forty-two thousand, six hundred eighty-six".