2042166243 has 16 divisors (see below), whose sum is σ = 2946250496. Its totient is φ = 1250756640.

The previous prime is 2042166241. The next prime is 2042166257. The reversal of 2042166243 is 3426612402.

It is not a de Polignac number, because 2042166243 - 2¹ = 2042166241 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 2042166243.

It is not an unprimeable number, because it can be changed into a prime (2042166241) 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, 115855 + ... + 132312.

It is an arithmetic number, because the mean of its divisors is an integer number (184140656).

Almost surely, 2^2042166243 is an apocalyptic number.

2042166243 is a deficient number, since it is larger than the sum of its proper divisors (904084253).

2042166243 is a wasteful number, since it uses less digits than its factorization.

2042166243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248394.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2042166243 is about 45190.3335128211. Note that the first 3 decimals coincide. The cubic root of 2042166243 is about 1268.7138990173.

Adding to 2042166243 its reverse (3426612402), we get a palindrome (5468778645).

The spelling of 2042166243 in words is "two billion, forty-two million, one hundred sixty-six thousand, two hundred forty-three".