42144439805 has 64 divisors (see below), whose sum is σ = 57397455360. Its totient is φ = 29490779136.

The previous prime is 42144439741. The next prime is 42144439819. The reversal of 42144439805 is 50893444124.

It is not a de Polignac number, because 42144439805 - 2⁶ = 42144439741 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 (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26127179 + ... + 26128791.

It is an arithmetic number, because the mean of its divisors is an integer number (896835240).

Almost surely, 2^42144439805 is an apocalyptic number.

It is an amenable number.

42144439805 is a deficient number, since it is larger than the sum of its proper divisors (15253015555).

42144439805 is a wasteful number, since it uses less digits than its factorization.

42144439805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 42144439805 in words is "forty-two billion, one hundred forty-four million, four hundred thirty-nine thousand, eight hundred five".