856773442 has 16 divisors (see below), whose sum is σ = 1469623680. Its totient is φ = 366971328.

The previous prime is 856773439. The next prime is 856773469. The reversal of 856773442 is 244377658.

It is a junction number, because it is equal to n+sod(n) for n = 856773392 and 856773401.

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, 7659 + ... + 42097.

It is an arithmetic number, because the mean of its divisors is an integer number (91851480).

Almost surely, 2^856773442 is an apocalyptic number.

856773442 is a deficient number, since it is larger than the sum of its proper divisors (612850238).

856773442 is a wasteful number, since it uses less digits than its factorization.

856773442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36225.

The product of its digits is 1128960, while the sum is 46.

The square root of 856773442 is about 29270.6925439081. The cubic root of 856773442 is about 949.7777659299. Note that the first 4 decimals are identical.

The spelling of 856773442 in words is "eight hundred fifty-six million, seven hundred seventy-three thousand, four hundred forty-two".