2542865 has 32 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 1693440.

The previous prime is 2542853. The next prime is 2542879. The reversal of 2542865 is 5682452.

It is not a de Polignac number, because 2542865 - 2⁴ = 2542849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35780 + ... + 35850.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^2542865 is an apocalyptic number.

It is an amenable number.

2542865 is a deficient number, since it is larger than the sum of its proper divisors (1085935).

2542865 is a wasteful number, since it uses less digits than its factorization.

2542865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137.

The product of its digits is 19200, while the sum is 32.

The square root of 2542865 is about 1594.6363221751. The cubic root of 2542865 is about 136.4921793298.

The spelling of 2542865 in words is "two million, five hundred forty-two thousand, eight hundred sixty-five".