42384785 has 4 divisors (see below), whose sum is σ = 50861748. Its totient is φ = 33907824.

The previous prime is 42384743. The next prime is 42384841. The reversal of 42384785 is 58748324.

42384785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4648336 + 37736449 = 2156^2 + 6143^2 .

It is a cyclic number.

It is not a de Polignac number, because 42384785 - 2²⁰ = 41336209 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4238474 + ... + 4238483.

It is an arithmetic number, because the mean of its divisors is an integer number (12715437).

Almost surely, 2^42384785 is an apocalyptic number.

It is an amenable number.

42384785 is a deficient number, since it is larger than the sum of its proper divisors (8476963).

42384785 is an equidigital number, since it uses as much as digits as its factorization.

42384785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476962.

The product of its digits is 215040, while the sum is 41.

The square root of 42384785 is about 6510.3598210852. The cubic root of 42384785 is about 348.6609652686.

The spelling of 42384785 in words is "forty-two million, three hundred eighty-four thousand, seven hundred eighty-five".