42881657 has 16 divisors (see below), whose sum is σ = 53528832. Its totient is φ = 33445440.

The previous prime is 42881653. The next prime is 42881659. The reversal of 42881657 is 75618824.

42881657 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 42881657 - 2² = 42881653 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42881653) 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, 3143 + ... + 9779.

It is an arithmetic number, because the mean of its divisors is an integer number (3345552).

Almost surely, 2^42881657 is an apocalyptic number.

It is an amenable number.

42881657 is a deficient number, since it is larger than the sum of its proper divisors (10647175).

42881657 is a wasteful number, since it uses less digits than its factorization.

42881657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728.

The product of its digits is 107520, while the sum is 41.

The square root of 42881657 is about 6548.4087380065. The cubic root of 42881657 is about 350.0181133483.

The spelling of 42881657 in words is "forty-two million, eight hundred eighty-one thousand, six hundred fifty-seven".