42591804 has 12 divisors (see below), whose sum is σ = 99380904. Its totient is φ = 14197264.

The previous prime is 42591779. The next prime is 42591811. The reversal of 42591804 is 40819524.

42591804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 1774647 + ... + 1774670.

It is an arithmetic number, because the mean of its divisors is an integer number (8281742).

Almost surely, 2^42591804 is an apocalyptic number.

It is an amenable number.

42591804 is an abundant number, since it is smaller than the sum of its proper divisors (56789100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42591804 is a wasteful number, since it uses less digits than its factorization.

42591804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549324 (or 3549322 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 42591804 is about 6526.2396523572. The cubic root of 42591804 is about 349.2276957390.

It can be divided in two parts, 425 and 91804, that added together give a palindrome (92229).

The spelling of 42591804 in words is "forty-two million, five hundred ninety-one thousand, eight hundred four".