2142365666 has 16 divisors (see below), whose sum is σ = 3681158400. Its totient is φ = 916023840.

The previous prime is 2142365623. The next prime is 2142365681. The reversal of 2142365666 is 6665632412.

It is a happy number.

It is a Curzon number.

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, 171491 + ... + 183558.

It is an arithmetic number, because the mean of its divisors is an integer number (230072400).

Almost surely, 2^2142365666 is an apocalyptic number.

2142365666 is a deficient number, since it is larger than the sum of its proper divisors (1538792734).

2142365666 is a wasteful number, since it uses less digits than its factorization.

2142365666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355489.

The product of its digits is 311040, while the sum is 41.

The square root of 2142365666 is about 46285.6961274215. The cubic root of 2142365666 is about 1289.1334175462.

The spelling of 2142365666 in words is "two billion, one hundred forty-two million, three hundred sixty-five thousand, six hundred sixty-six".