855008642 has 16 divisors (see below), whose sum is σ = 1358532000. Its totient is φ = 402186048.

The previous prime is 855008611. The next prime is 855008701. The reversal of 855008642 is 246800558.

855008642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 855008596 and 855008605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115373 + ... + 122559.

It is an arithmetic number, because the mean of its divisors is an integer number (84908250).

Almost surely, 2^855008642 is an apocalyptic number.

855008642 is a deficient number, since it is larger than the sum of its proper divisors (503523358).

855008642 is a wasteful number, since it uses less digits than its factorization.

855008642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10705.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 855008642 is about 29240.5308091355. The cubic root of 855008642 is about 949.1251935747.

The spelling of 855008642 in words is "eight hundred fifty-five million, eight thousand, six hundred forty-two".