42756844 has 24 divisors (see below), whose sum is σ = 80806880. Its totient is φ = 19678464.

The previous prime is 42756841. The next prime is 42756851. The reversal of 42756844 is 44865724.

It is a happy number.

42756844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42756797 and 42756806.

It is not an unprimeable number, because it can be changed into a prime (42756841) 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, 21892 + ... + 23764.

Almost surely, 2^42756844 is an apocalyptic number.

It is an amenable number.

42756844 is a deficient number, since it is larger than the sum of its proper divisors (38050036).

42756844 is a wasteful number, since it uses less digits than its factorization.

42756844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329 (or 2327 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 42756844 is about 6538.8717681264. The cubic root of 42756844 is about 349.6781912774.

The spelling of 42756844 in words is "forty-two million, seven hundred fifty-six thousand, eight hundred forty-four".