42887905 has 8 divisors (see below), whose sum is σ = 52190784. Its totient is φ = 33826800.

The previous prime is 42887891. The next prime is 42887909. The reversal of 42887905 is 50978824.

42887905 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 42887905 - 2⁷ = 42887777 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (42887909) 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, 60051 + ... + 60760.

It is an arithmetic number, because the mean of its divisors is an integer number (6523848).

Almost surely, 2^42887905 is an apocalyptic number.

It is an amenable number.

42887905 is a deficient number, since it is larger than the sum of its proper divisors (9302879).

42887905 is a wasteful number, since it uses less digits than its factorization.

42887905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120887.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 42887905 is about 6548.8857830932. The cubic root of 42887905 is about 350.0351121237.

The spelling of 42887905 in words is "forty-two million, eight hundred eighty-seven thousand, nine hundred five".