7142857865 has 32 divisors (see below), whose sum is σ = 10169736192. Its totient is φ = 4747680000.

The previous prime is 7142857849. The next prime is 7142857871. The reversal of 7142857865 is 5687582417.

It is not a de Polignac number, because 7142857865 - 2⁴ = 7142857849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22760 + ... + 121670.

It is an arithmetic number, because the mean of its divisors is an integer number (317804256).

Almost surely, 2^7142857865 is an apocalyptic number.

It is an amenable number.

7142857865 is a deficient number, since it is larger than the sum of its proper divisors (3026878327).

7142857865 is a wasteful number, since it uses less digits than its factorization.

7142857865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99041.

The product of its digits is 3763200, while the sum is 53.

The square root of 7142857865 is about 84515.4297451063. The cubic root of 7142857865 is about 1925.8568504556.

The spelling of 7142857865 in words is "seven billion, one hundred forty-two million, eight hundred fifty-seven thousand, eight hundred sixty-five".