12123024440 has 32 divisors (see below), whose sum is σ = 27304642080. Its totient is φ = 4844260992.

The previous prime is 12123024439. The next prime is 12123024449. The reversal of 12123024440 is 4442032121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123024449) 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, 114839 + ... + 193478.

It is an arithmetic number, because the mean of its divisors is an integer number (853270065).

Almost surely, 2^12123024440 is an apocalyptic number.

12123024440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123024440 is an abundant number, since it is smaller than the sum of its proper divisors (15181617640).

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

12123024440 is a wasteful number, since it uses less digits than its factorization.

12123024440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309311 (or 309307 counting only the distinct ones).

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

Adding to 12123024440 its reverse (4442032121), we get a palindrome (16565056561).

The spelling of 12123024440 in words is "twelve billion, one hundred twenty-three million, twenty-four thousand, four hundred forty".