12012043042 has 4 divisors (see below), whose sum is σ = 18018064566. Its totient is φ = 6006021520.

The previous prime is 12012042989. The next prime is 12012043093. The reversal of 12012043042 is 24034021021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7081054201 + 4930988841 = 84149^2 + 70221^2 .

It is a super-2 number, since 2×12012043042² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3003010759 + ... + 3003010762.

Almost surely, 2^12012043042 is an apocalyptic number.

12012043042 is a deficient number, since it is larger than the sum of its proper divisors (6006021524).

12012043042 is an equidigital number, since it uses as much as digits as its factorization.

12012043042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006021523.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12012043042 its reverse (24034021021), we get a palindrome (36046064063).

The spelling of 12012043042 in words is "twelve billion, twelve million, forty-three thousand, forty-two".