857142857143 has 8 divisors (see below), whose sum is σ = 857529780128. Its totient is φ = 856756030464.

The previous prime is 857142857113. The next prime is 857142857171. The reversal of 857142857143 is 341758241758.

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

It is a cyclic number.

It is not a de Polignac number, because 857142857143 - 2³⁷ = 719703903671 is a prime.

It is a super-2 number, since 2×857142857143² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857142857113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22107871 + ... + 22146607.

It is an arithmetic number, because the mean of its divisors is an integer number (107191222516).

Almost surely, 2^857142857143 is an apocalyptic number.

857142857143 is a deficient number, since it is larger than the sum of its proper divisors (386922985).

857142857143 is a wasteful number, since it uses less digits than its factorization.

857142857143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48153.

The product of its digits is 7526400, while the sum is 55.

The spelling of 857142857143 in words is "eight hundred fifty-seven billion, one hundred forty-two million, eight hundred fifty-seven thousand, one hundred forty-three".