8142865 has 8 divisors (see below), whose sum is σ = 9789480. Its totient is φ = 6502272.

The previous prime is 8142857. The next prime is 8142907. The reversal of 8142865 is 5682418.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 8059921 = 288^2 + 2839^2 .

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 8142865 - 2³ = 8142857 is a prime.

8142865 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8142865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397 + ... + 4693.

It is an arithmetic number, because the mean of its divisors is an integer number (1223685).

Almost surely, 2^8142865 is an apocalyptic number.

It is an amenable number.

8142865 is a deficient number, since it is larger than the sum of its proper divisors (1646615).

8142865 is a wasteful number, since it uses less digits than its factorization.

8142865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011.

The product of its digits is 15360, while the sum is 34.

The square root of 8142865 is about 2853.5705703557. The cubic root of 8142865 is about 201.1835242040.

The spelling of 8142865 in words is "eight million, one hundred forty-two thousand, eight hundred sixty-five".