12043013240 has 32 divisors (see below), whose sum is σ = 27345384000. Its totient is φ = 4773009024.

The previous prime is 12043013221. The next prime is 12043013261. The reversal of 12043013240 is 4231034021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376720 + ... + 1385439.

It is an arithmetic number, because the mean of its divisors is an integer number (854543250).

Almost surely, 2^12043013240 is an apocalyptic number.

12043013240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12043013240 is an abundant number, since it is smaller than the sum of its proper divisors (15302370760).

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

12043013240 is a wasteful number, since it uses less digits than its factorization.

12043013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762279 (or 2762275 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12043013240 its reverse (4231034021), we get a palindrome (16274047261).

The spelling of 12043013240 in words is "twelve billion, forty-three million, thirteen thousand, two hundred forty".