2042643265 has 16 divisors (see below), whose sum is σ = 2695891968. Its totient is φ = 1476317376.

The previous prime is 2042643223. The next prime is 2042643269. The reversal of 2042643265 is 5623462402.

It is not a de Polignac number, because 2042643265 - 2¹³ = 2042635073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2042643265.

It is not an unprimeable number, because it can be changed into a prime (2042643269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331257 + ... + 337366.

It is an arithmetic number, because the mean of its divisors is an integer number (168493248).

Almost surely, 2^2042643265 is an apocalyptic number.

It is an amenable number.

2042643265 is a deficient number, since it is larger than the sum of its proper divisors (653248703).

2042643265 is a wasteful number, since it uses less digits than its factorization.

2042643265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668688.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 2042643265 is about 45195.6111254179. The cubic root of 2042643265 is about 1268.8126760434.

The spelling of 2042643265 in words is "two billion, forty-two million, six hundred forty-three thousand, two hundred sixty-five".