42656541 has 4 divisors (see below), whose sum is σ = 56875392. Its totient is φ = 28437692.

The previous prime is 42656533. The next prime is 42656557. The reversal of 42656541 is 14565624.

42656541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42656541 - 2³ = 42656533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42656521) 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 3 ways as a sum of consecutive naturals, for example, 7109421 + ... + 7109426.

It is an arithmetic number, because the mean of its divisors is an integer number (14218848).

Almost surely, 2^42656541 is an apocalyptic number.

It is an amenable number.

42656541 is a deficient number, since it is larger than the sum of its proper divisors (14218851).

42656541 is a wasteful number, since it uses less digits than its factorization.

42656541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14218850.

The product of its digits is 28800, while the sum is 33.

The square root of 42656541 is about 6531.1975165355. The cubic root of 42656541 is about 349.4045412557.

The spelling of 42656541 in words is "forty-two million, six hundred fifty-six thousand, five hundred forty-one".