42868641 has 16 divisors (see below), whose sum is σ = 59544000. Its totient is φ = 27400128.

The previous prime is 42868627. The next prime is 42868783. The reversal of 42868641 is 14686824.

42868641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42868641 - 2⁷ = 42868513 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42868641.

It is not an unprimeable number, because it can be changed into a prime (42867641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11310 + ... + 14616.

It is an arithmetic number, because the mean of its divisors is an integer number (3721500).

Almost surely, 2^42868641 is an apocalyptic number.

It is an amenable number.

42868641 is a deficient number, since it is larger than the sum of its proper divisors (16675359).

42868641 is a wasteful number, since it uses less digits than its factorization.

42868641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488.

The product of its digits is 73728, while the sum is 39.

The square root of 42868641 is about 6547.4148333522. The cubic root of 42868641 is about 349.9826957431.

The spelling of 42868641 in words is "forty-two million, eight hundred sixty-eight thousand, six hundred forty-one".