856999342 has 16 divisors (see below), whose sum is σ = 1374598512. Its totient is φ = 399299200.

The previous prime is 856999337. The next prime is 856999373. The reversal of 856999342 is 243999658.

It is a happy number.

856999342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 121348 + ... + 128215.

It is an arithmetic number, because the mean of its divisors is an integer number (85912407).

Almost surely, 2^856999342 is an apocalyptic number.

856999342 is a deficient number, since it is larger than the sum of its proper divisors (517599170).

856999342 is a wasteful number, since it uses less digits than its factorization.

856999342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249683.

The product of its digits is 4199040, while the sum is 55.

The square root of 856999342 is about 29274.5510981808. The cubic root of 856999342 is about 949.8612325473.

The spelling of 856999342 in words is "eight hundred fifty-six million, nine hundred ninety-nine thousand, three hundred forty-two".