42886681 has 8 divisors (see below), whose sum is σ = 43533504. Its totient is φ = 42243120.

The previous prime is 42886661. The next prime is 42886709. The reversal of 42886681 is 18668824.

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

It is a cyclic number.

It is not a de Polignac number, because 42886681 - 2²³ = 34498073 is a prime.

It is a super-2 number, since 2×42886681² = 3678534814391522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42886601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39891 + ... + 40951.

It is an arithmetic number, because the mean of its divisors is an integer number (5441688).

Almost surely, 2^42886681 is an apocalyptic number.

It is an amenable number.

42886681 is a deficient number, since it is larger than the sum of its proper divisors (646823).

42886681 is a wasteful number, since it uses less digits than its factorization.

42886681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 147456, while the sum is 43.

The square root of 42886681 is about 6548.7923314150. The cubic root of 42886681 is about 350.0317821479.

The spelling of 42886681 in words is "forty-two million, eight hundred eighty-six thousand, six hundred eighty-one".