13142857 has 8 divisors (see below), whose sum is σ = 16175936. Its totient is φ = 10398672.

The previous prime is 13142839. The next prime is 13142861. The reversal of 13142857 is 75824131.

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 13142857 - 2¹⁵ = 13110089 is a prime.

13142857 is a modest number, since divided by 142857 gives 13 as remainder.

It is not an unprimeable number, because it can be changed into a prime (13142057) 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, 72123 + ... + 72304.

It is an arithmetic number, because the mean of its divisors is an integer number (2021992).

Almost surely, 2^13142857 is an apocalyptic number.

It is an amenable number.

13142857 is a deficient number, since it is larger than the sum of its proper divisors (3033079).

13142857 is a wasteful number, since it uses less digits than its factorization.

13142857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144447.

The product of its digits is 6720, while the sum is 31.

The square root of 13142857 is about 3625.3078489971. The cubic root of 13142857 is about 235.9916268695.

Adding to 13142857 its reverse (75824131), we get a palindrome (88966988).

The spelling of 13142857 in words is "thirteen million, one hundred forty-two thousand, eight hundred fifty-seven".