857307142 has 8 divisors (see below), whose sum is σ = 1286099136. Its totient is φ = 428607432.

The previous prime is 857307133. The next prime is 857307169. The reversal of 857307142 is 241703758.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9163 + ... + 42409.

It is an arithmetic number, because the mean of its divisors is an integer number (160762392).

Almost surely, 2^857307142 is an apocalyptic number.

857307142 is a deficient number, since it is larger than the sum of its proper divisors (428791994).

857307142 is a wasteful number, since it uses less digits than its factorization.

857307142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46142.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 857307142 is about 29279.8077521011. The cubic root of 857307142 is about 949.9749363655.

The spelling of 857307142 in words is "eight hundred fifty-seven million, three hundred seven thousand, one hundred forty-two".