2142905775 has 12 divisors (see below), whose sum is σ = 3542937672. Its totient is φ = 1142883040.

The previous prime is 2142905771. The next prime is 2142905797. The reversal of 2142905775 is 5775092412.

It is not a de Polignac number, because 2142905775 - 2² = 2142905771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142905771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14285964 + ... + 14286113.

It is an arithmetic number, because the mean of its divisors is an integer number (295244806).

Almost surely, 2^2142905775 is an apocalyptic number.

2142905775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2142905775 is a deficient number, since it is larger than the sum of its proper divisors (1400031897).

2142905775 is a wasteful number, since it uses less digits than its factorization.

2142905775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28572090 (or 28572085 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 2142905775 is about 46291.5302728264. The cubic root of 2142905775 is about 1289.2417423555.

The spelling of 2142905775 in words is "two billion, one hundred forty-two million, nine hundred five thousand, seven hundred seventy-five".