42044985 has 24 divisors (see below), whose sum is σ = 73806720. Its totient is φ = 22138272.

The previous prime is 42044971. The next prime is 42045011. The reversal of 42044985 is 58944024.

It is not a de Polignac number, because 42044985 - 2¹⁰ = 42043961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2359 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (3075280).

Almost surely, 2^42044985 is an apocalyptic number.

42044985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42044985 is a deficient number, since it is larger than the sum of its proper divisors (31761735).

42044985 is a wasteful number, since it uses less digits than its factorization.

42044985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11917 (or 11914 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 42044985 is about 6484.2104376709. The cubic root of 42044985 is about 347.7267226349.

The spelling of 42044985 in words is "forty-two million, forty-four thousand, nine hundred eighty-five".