42755865 has 16 divisors (see below), whose sum is σ = 68553216. Its totient is φ = 22755200.

The previous prime is 42755863. The next prime is 42755879. The reversal of 42755865 is 56855724.

It is not a de Polignac number, because 42755865 - 2¹ = 42755863 is a prime.

Its product of digits (336000) is a multiple of the sum of its prime divisors (6000).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42755861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5080 + ... + 10550.

It is an arithmetic number, because the mean of its divisors is an integer number (4284576).

Almost surely, 2^42755865 is an apocalyptic number.

It is an amenable number.

42755865 is a deficient number, since it is larger than the sum of its proper divisors (25797351).

42755865 is a wasteful number, since it uses less digits than its factorization.

42755865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000.

The product of its digits is 336000, while the sum is 42.

The square root of 42755865 is about 6538.7969076888. The cubic root of 42755865 is about 349.6755224059.

The spelling of 42755865 in words is "forty-two million, seven hundred fifty-five thousand, eight hundred sixty-five".