12042112420 has 48 divisors (see below), whose sum is σ = 27295994880. Its totient is φ = 4436148096.

The previous prime is 12042112417. The next prime is 12042112483. The reversal of 12042112420 is 2421124021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61389 + ... + 166891.

It is an arithmetic number, because the mean of its divisors is an integer number (568666560).

Almost surely, 2^12042112420 is an apocalyptic number.

12042112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12042112420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13647997440).

12042112420 is an abundant number, since it is smaller than the sum of its proper divisors (15253882460).

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

12042112420 is a wasteful number, since it uses less digits than its factorization.

12042112420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105964 (or 105962 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12042112420 its reverse (2421124021), we get a palindrome (14463236441).

The spelling of 12042112420 in words is "twelve billion, forty-two million, one hundred twelve thousand, four hundred twenty".