12005204042 has 16 divisors (see below), whose sum is σ = 19406073960. Its totient is φ = 5537134272.

The previous prime is 12005204033. The next prime is 12005204053. The reversal of 12005204042 is 24040250021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9470987761 + 2534216281 = 97319^2 + 50341^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115817 + ... + 193452.

Almost surely, 2^12005204042 is an apocalyptic number.

12005204042 is a deficient number, since it is larger than the sum of its proper divisors (7400869918).

12005204042 is a wasteful number, since it uses less digits than its factorization.

12005204042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310777.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 12005204042 its reverse (24040250021), we get a palindrome (36045454063).

The spelling of 12005204042 in words is "twelve billion, five million, two hundred four thousand, forty-two".