3142857 has 16 divisors (see below), whose sum is σ = 4320000. Its totient is φ = 2031744.

The previous prime is 3142849. The next prime is 3142859. The reversal of 3142857 is 7582413.

It is not a de Polignac number, because 3142857 - 2³ = 3142849 is a prime.

Its product of digits (6720) is a multiple of the sum of its prime divisors (320).

3142857 is a modest number, since divided by 142857 gives 3 as remainder.

It is not an unprimeable number, because it can be changed into a prime (3142859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21019 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (270000).

Almost surely, 2^3142857 is an apocalyptic number.

It is an amenable number.

3142857 is a deficient number, since it is larger than the sum of its proper divisors (1177143).

3142857 is a wasteful number, since it uses less digits than its factorization.

3142857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 6720, while the sum is 30.

The square root of 3142857 is about 1772.8104805647. The cubic root of 3142857 is about 146.4788338146.

The spelling of 3142857 in words is "three million, one hundred forty-two thousand, eight hundred fifty-seven".