42845541 has 4 divisors (see below), whose sum is σ = 57127392. Its totient is φ = 28563692.

The previous prime is 42845521. The next prime is 42845549. The reversal of 42845541 is 14554824.

It is a happy number.

42845541 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 42845541 - 2²⁵ = 9291109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42845549) 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, 7140921 + ... + 7140926.

It is an arithmetic number, because the mean of its divisors is an integer number (14281848).

Almost surely, 2^42845541 is an apocalyptic number.

It is an amenable number.

42845541 is a deficient number, since it is larger than the sum of its proper divisors (14281851).

42845541 is a wasteful number, since it uses less digits than its factorization.

42845541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14281850.

The product of its digits is 25600, while the sum is 33.

The square root of 42845541 is about 6545.6505406262. The cubic root of 42845541 is about 349.9198210896.

The spelling of 42845541 in words is "forty-two million, eight hundred forty-five thousand, five hundred forty-one".