42443943 has 8 divisors (see below), whose sum is σ = 56908800. Its totient is φ = 28137528.

The previous prime is 42443939. The next prime is 42443953. The reversal of 42443943 is 34934424.

It is a happy number.

42443943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42443943 - 2² = 42443939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443953) 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, 38983 + ... + 40056.

It is an arithmetic number, because the mean of its divisors is an integer number (7113600).

Almost surely, 2^42443943 is an apocalyptic number.

42443943 is a deficient number, since it is larger than the sum of its proper divisors (14464857).

42443943 is a wasteful number, since it uses less digits than its factorization.

42443943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79221.

The product of its digits is 41472, while the sum is 33.

The square root of 42443943 is about 6514.9016109225. The cubic root of 42443943 is about 348.8231028267.

The spelling of 42443943 in words is "forty-two million, four hundred forty-three thousand, nine hundred forty-three".