42755766 has 16 divisors (see below), whose sum is σ = 86961600. Its totient is φ = 14010248.

The previous prime is 42755749. The next prime is 42755767. The reversal of 42755766 is 66755724.

42755766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42755767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60036 + ... + 60743.

It is an arithmetic number, because the mean of its divisors is an integer number (5435100).

Almost surely, 2^42755766 is an apocalyptic number.

42755766 is an abundant number, since it is smaller than the sum of its proper divisors (44205834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42755766 is a wasteful number, since it uses less digits than its factorization.

42755766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120843.

The product of its digits is 352800, while the sum is 42.

The square root of 42755766 is about 6538.7893374844. The cubic root of 42755766 is about 349.6752525178.

Subtracting from 42755766 its sum of digits (42), we obtain a palindrome (42755724).

The spelling of 42755766 in words is "forty-two million, seven hundred fifty-five thousand, seven hundred sixty-six".