857320442 has 16 divisors (see below), whose sum is σ = 1406332800. Its totient is φ = 388734240.

The previous prime is 857320433. The next prime is 857320481. The reversal of 857320442 is 244023758.

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, 38642 + ... + 56637.

It is an arithmetic number, because the mean of its divisors is an integer number (87895800).

Almost surely, 2^857320442 is an apocalyptic number.

857320442 is a deficient number, since it is larger than the sum of its proper divisors (549012358).

857320442 is a wasteful number, since it uses less digits than its factorization.

857320442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95701.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 857320442 is about 29280.0348701978. The cubic root of 857320442 is about 949.9798488800.

The spelling of 857320442 in words is "eight hundred fifty-seven million, three hundred twenty thousand, four hundred forty-two".