42775985 has 8 divisors (see below), whose sum is σ = 58664256. Its totient is φ = 29332080.

The previous prime is 42775979. The next prime is 42776039. The reversal of 42775985 is 58957724.

It is a happy number.

42775985 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 42775985 - 2¹⁰ = 42774961 is a prime.

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, 611051 + ... + 611120.

It is an arithmetic number, because the mean of its divisors is an integer number (7333032).

Almost surely, 2^42775985 is an apocalyptic number.

It is an amenable number.

42775985 is a deficient number, since it is larger than the sum of its proper divisors (15888271).

42775985 is a wasteful number, since it uses less digits than its factorization.

42775985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222183.

The product of its digits is 705600, while the sum is 47.

The square root of 42775985 is about 6540.3352360563. The cubic root of 42775985 is about 349.7303637570.

The spelling of 42775985 in words is "forty-two million, seven hundred seventy-five thousand, nine hundred eighty-five".