12020155042 has 32 divisors (see below), whose sum is σ = 21031046784. Its totient is φ = 5045932800.

The previous prime is 12020155039. The next prime is 12020155057. The reversal of 12020155042 is 24055102021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176613 + ... + 235015.

It is an arithmetic number, because the mean of its divisors is an integer number (657220212).

Almost surely, 2^12020155042 is an apocalyptic number.

12020155042 is a deficient number, since it is larger than the sum of its proper divisors (9010891742).

12020155042 is a wasteful number, since it uses less digits than its factorization.

12020155042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58714.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 12020155042 its reverse (24055102021), we get a palindrome (36075257063).

The spelling of 12020155042 in words is "twelve billion, twenty million, one hundred fifty-five thousand, forty-two".