865142995 has 16 divisors (see below), whose sum is σ = 1050964992. Its totient is φ = 683635680.

The previous prime is 865142987. The next prime is 865143001. The reversal of 865142995 is 599241568.

It is not a de Polignac number, because 865142995 - 2³ = 865142987 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 143104 + ... + 149026.

It is an arithmetic number, because the mean of its divisors is an integer number (65685312).

Almost surely, 2^865142995 is an apocalyptic number.

865142995 is a deficient number, since it is larger than the sum of its proper divisors (185821997).

865142995 is a wasteful number, since it uses less digits than its factorization.

865142995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282.

The product of its digits is 777600, while the sum is 49.

The square root of 865142995 is about 29413.3132271766. The cubic root of 865142995 is about 952.8604441347.

The spelling of 865142995 in words is "eight hundred sixty-five million, one hundred forty-two thousand, nine hundred ninety-five".