42956844 has 24 divisors (see below), whose sum is σ = 114551808. Its totient is φ = 12273360.

The previous prime is 42956839. The next prime is 42956869. The reversal of 42956844 is 44865924.

42956844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 42956796 and 42956805.

It is an unprimeable number.

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, 255612 + ... + 255779.

It is an arithmetic number, because the mean of its divisors is an integer number (4772992).

Almost surely, 2^42956844 is an apocalyptic number.

It is an amenable number.

42956844 is an abundant number, since it is smaller than the sum of its proper divisors (71594964).

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

42956844 is a wasteful number, since it uses less digits than its factorization.

42956844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511405 (or 511403 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 42956844 is about 6554.1470840987. The cubic root of 42956844 is about 350.2225632051. Note that the first 3 decimals are identical.

The spelling of 42956844 in words is "forty-two million, nine hundred fifty-six thousand, eight hundred forty-four".