42776855 has 8 divisors (see below), whose sum is σ = 55998864. Its totient is φ = 31110400.

The previous prime is 42776843. The next prime is 42776863. The reversal of 42776855 is 55867724.

42776855 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 42776855 - 2⁶ = 42776791 is a prime.

It is a Duffinian number.

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, 388826 + ... + 388935.

It is an arithmetic number, because the mean of its divisors is an integer number (6999858).

Almost surely, 2^42776855 is an apocalyptic number.

42776855 is a deficient number, since it is larger than the sum of its proper divisors (13222009).

42776855 is a wasteful number, since it uses less digits than its factorization.

42776855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777777.

The product of its digits is 470400, while the sum is 44.

The square root of 42776855 is about 6540.4017460703. The cubic root of 42776855 is about 349.7327347397.

The spelling of 42776855 in words is "forty-two million, seven hundred seventy-six thousand, eight hundred fifty-five".