42438843 has 16 divisors (see below), whose sum is σ = 63264640. Its totient is φ = 28116072.

The previous prime is 42438839. The next prime is 42438857. The reversal of 42438843 is 34883424.

42438843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42438843 - 2² = 42438839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42438798 and 42438807.

It is not an unprimeable number, because it can be changed into a prime (42438833) 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 15 ways as a sum of consecutive naturals, for example, 421 + ... + 9222.

It is an arithmetic number, because the mean of its divisors is an integer number (3954040).

Almost surely, 2^42438843 is an apocalyptic number.

42438843 is a deficient number, since it is larger than the sum of its proper divisors (20825797).

42438843 is a wasteful number, since it uses less digits than its factorization.

42438843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815 (or 9809 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 42438843 is about 6514.5101888016. The cubic root of 42438843 is about 348.8091309149.

The spelling of 42438843 in words is "forty-two million, four hundred thirty-eight thousand, eight hundred forty-three".