42385885 has 8 divisors (see below), whose sum is σ = 50949720. Its totient is φ = 33850944.

The previous prime is 42385877. The next prime is 42385919. The reversal of 42385885 is 58858324.

42385885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2304324 + 40081561 = 1518^2 + 6331^2 .

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 42385885 - 2³ = 42385877 is a prime.

It is a congruent number.

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, 3850 + ... + 9979.

It is an arithmetic number, because the mean of its divisors is an integer number (6368715).

Almost surely, 2^42385885 is an apocalyptic number.

It is an amenable number.

42385885 is a deficient number, since it is larger than the sum of its proper divisors (8563835).

42385885 is a wasteful number, since it uses less digits than its factorization.

42385885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447.

The product of its digits is 307200, while the sum is 43.

The square root of 42385885 is about 6510.4443012747. Note that the first 3 decimals coincide. The cubic root of 42385885 is about 348.6639814747.

The spelling of 42385885 in words is "forty-two million, three hundred eighty-five thousand, eight hundred eighty-five".