857123134 has 8 divisors (see below), whose sum is σ = 1469353968. Its totient is φ = 367338480.

The previous prime is 857123089. The next prime is 857123143. The reversal of 857123134 is 431321758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 857123134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30611527 + ... + 30611554.

It is an arithmetic number, because the mean of its divisors is an integer number (183669246).

Almost surely, 2^857123134 is an apocalyptic number.

857123134 is a deficient number, since it is larger than the sum of its proper divisors (612230834).

857123134 is a wasteful number, since it uses less digits than its factorization.

857123134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61223090.

The product of its digits is 20160, while the sum is 34.

The square root of 857123134 is about 29276.6653497286. The cubic root of 857123134 is about 949.9069655893.

The spelling of 857123134 in words is "eight hundred fifty-seven million, one hundred twenty-three thousand, one hundred thirty-four".