12020434142 has 8 divisors (see below), whose sum is σ = 18199162296. Its totient is φ = 5954046712.

The previous prime is 12020434067. The next prime is 12020434147. The reversal of 12020434142 is 24143402021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020434147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28084913 + ... + 28085340.

It is an arithmetic number, because the mean of its divisors is an integer number (2274895287).

Almost surely, 2^12020434142 is an apocalyptic number.

12020434142 is a deficient number, since it is larger than the sum of its proper divisors (6178728154).

12020434142 is a wasteful number, since it uses less digits than its factorization.

12020434142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56170362.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12020434142 its reverse (24143402021), we get a palindrome (36163836163).

The spelling of 12020434142 in words is "twelve billion, twenty million, four hundred thirty-four thousand, one hundred forty-two".