12013434442 has 16 divisors (see below), whose sum is σ = 18494142912. Its totient is φ = 5850759040.

The previous prime is 12013434431. The next prime is 12013434449. The reversal of 12013434442 is 24443431021.

It is a self number, because there is not a number n which added to its sum of digits gives 12013434442.

It is not an unprimeable number, because it can be changed into a prime (12013434449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497863 + ... + 521434.

It is an arithmetic number, because the mean of its divisors is an integer number (1155883932).

Almost surely, 2^12013434442 is an apocalyptic number.

12013434442 is a deficient number, since it is larger than the sum of its proper divisors (6480708470).

12013434442 is a wasteful number, since it uses less digits than its factorization.

12013434442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019453.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12013434442 its reverse (24443431021), we get a palindrome (36456865463).

The spelling of 12013434442 in words is "twelve billion, thirteen million, four hundred thirty-four thousand, four hundred forty-two".