12126423504 has 160 divisors (see below), whose sum is σ = 35942699520. Its totient is φ = 3491956224.

The previous prime is 12126423497. The next prime is 12126423509. The reversal of 12126423504 is 40532462121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126423509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 977887 + ... + 990209.

It is an arithmetic number, because the mean of its divisors is an integer number (224641872).

Almost surely, 2^12126423504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12126423504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17971349760).

12126423504 is an abundant number, since it is smaller than the sum of its proper divisors (23816276016).

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

12126423504 is a wasteful number, since it uses less digits than its factorization.

12126423504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12449 (or 12443 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12126423504 its reverse (40532462121), we get a palindrome (52658885625).

The spelling of 12126423504 in words is "twelve billion, one hundred twenty-six million, four hundred twenty-three thousand, five hundred four".