42541815 has 16 divisors (see below), whose sum is σ = 69516288. Its totient is φ = 22205856.

The previous prime is 42541801. The next prime is 42541841. The reversal of 42541815 is 51814524.

42541815 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 42541815 - 2⁴ = 42541799 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 29467 + ... + 30876.

It is an arithmetic number, because the mean of its divisors is an integer number (4344768).

Almost surely, 2^42541815 is an apocalyptic number.

42541815 is a deficient number, since it is larger than the sum of its proper divisors (26974473).

42541815 is a wasteful number, since it uses less digits than its factorization.

42541815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60398.

The product of its digits is 6400, while the sum is 30.

The square root of 42541815 is about 6522.4086808479. The cubic root of 42541815 is about 349.0910154708.

The spelling of 42541815 in words is "forty-two million, five hundred forty-one thousand, eight hundred fifteen".