2042156566 has 8 divisors (see below), whose sum is σ = 3090343464. Its totient is φ = 1012042080.

The previous prime is 2042156563. The next prime is 2042156579. The reversal of 2042156566 is 6656512402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042156561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4517820 + ... + 4518271.

It is an arithmetic number, because the mean of its divisors is an integer number (386292933).

Almost surely, 2^2042156566 is an apocalyptic number.

2042156566 is a deficient number, since it is larger than the sum of its proper divisors (1048186898).

2042156566 is a wasteful number, since it uses less digits than its factorization.

2042156566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036206.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 2042156566 is about 45190.2264433362. The cubic root of 2042156566 is about 1268.7118950401.

Adding to 2042156566 its reverse (6656512402), we get a palindrome (8698668968).

The spelling of 2042156566 in words is "two billion, forty-two million, one hundred fifty-six thousand, five hundred sixty-six".