42443855 has 8 divisors (see below), whose sum is σ = 53147232. Its totient is φ = 32478688.

The previous prime is 42443801. The next prime is 42443857. The reversal of 42443855 is 55834424.

42443855 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 a cyclic number.

It is not a de Polignac number, because 42443855 - 2¹⁶ = 42378319 is a prime.

It is a super-2 number, since 2×42443855² = 3602961654522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443857) 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, 184424 + ... + 184653.

It is an arithmetic number, because the mean of its divisors is an integer number (6643404).

Almost surely, 2^42443855 is an apocalyptic number.

42443855 is a deficient number, since it is larger than the sum of its proper divisors (10703377).

42443855 is a wasteful number, since it uses less digits than its factorization.

42443855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369105.

The product of its digits is 76800, while the sum is 35.

The square root of 42443855 is about 6514.8948571715. The cubic root of 42443855 is about 348.8228617522.

The spelling of 42443855 in words is "forty-two million, four hundred forty-three thousand, eight hundred fifty-five".