2042785865 has 8 divisors (see below), whose sum is σ = 2452664448. Its totient is φ = 1633347760.

The previous prime is 2042785859. The next prime is 2042785867. The reversal of 2042785865 is 5685872402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2042785865 - 2²² = 2038591561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042785867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99827 + ... + 118536.

It is an arithmetic number, because the mean of its divisors is an integer number (306583056).

Almost surely, 2^2042785865 is an apocalyptic number.

It is an amenable number.

2042785865 is a deficient number, since it is larger than the sum of its proper divisors (409878583).

2042785865 is a wasteful number, since it uses less digits than its factorization.

2042785865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220239.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 2042785865 is about 45197.1886846959. The cubic root of 2042785865 is about 1268.8422012638.

The spelling of 2042785865 in words is "two billion, forty-two million, seven hundred eighty-five thousand, eight hundred sixty-five".