12011142042 has 24 divisors (see below), whose sum is σ = 26026770900. Its totient is φ = 4003309440.

The previous prime is 12011142007. The next prime is 12011142083. The reversal of 12011142042 is 24024111021.

12011142042 is a `hidden beast` number, since 1 + 201 + 1 + 1 + 420 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10332519201 + 1678622841 = 101649^2 + 40971^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189192 + ... + 244572.

Almost surely, 2^12011142042 is an apocalyptic number.

12011142042 is an abundant number, since it is smaller than the sum of its proper divisors (14015628858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011142042 is a wasteful number, since it uses less digits than its factorization.

12011142042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67438 (or 67435 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12011142042 its reverse (24024111021), we get a palindrome (36035253063).

The spelling of 12011142042 in words is "twelve billion, eleven million, one hundred forty-two thousand, forty-two".