42043785 has 16 divisors (see below), whose sum is σ = 76880256. Its totient is φ = 19219968.

The previous prime is 42043769. The next prime is 42043817. The reversal of 42043785 is 58734024.

It is not a de Polignac number, because 42043785 - 2⁴ = 42043769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200104 + ... + 200313.

It is an arithmetic number, because the mean of its divisors is an integer number (4805016).

Almost surely, 2^42043785 is an apocalyptic number.

It is an amenable number.

42043785 is a deficient number, since it is larger than the sum of its proper divisors (34836471).

42043785 is a wasteful number, since it uses less digits than its factorization.

42043785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400432.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 42043785 is about 6484.1179045418. The cubic root of 42043785 is about 347.7234144637.

The spelling of 42043785 in words is "forty-two million, forty-three thousand, seven hundred eighty-five".