42940686 has 8 divisors (see below), whose sum is σ = 85881384. Its totient is φ = 14313560.

The previous prime is 42940679. The next prime is 42940693. The reversal of 42940686 is 68604924.

42940686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42940679) and next prime (42940693).

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

42940686 is an admirable number.

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, 3578385 + ... + 3578396.

It is an arithmetic number, because the mean of its divisors is an integer number (10735173).

Almost surely, 2^42940686 is an apocalyptic number.

42940686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42940686 is a wasteful number, since it uses less digits than its factorization.

42940686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156786.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 42940686 is about 6552.9143134944. The cubic root of 42940686 is about 350.1786462153.

The spelling of 42940686 in words is "forty-two million, nine hundred forty thousand, six hundred eighty-six".