12043012340 has 24 divisors (see below), whose sum is σ = 25973849832. Its totient is φ = 4687009920.

The previous prime is 12043012321. The next prime is 12043012343. The reversal of 12043012340 is 4321034021.

It can be written as a sum of positive squares in 4 ways, for example, as 1192873444 + 10850138896 = 34538^2 + 104164^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043012343) 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, 8136431 + ... + 8137910.

It is an arithmetic number, because the mean of its divisors is an integer number (1082243743).

Almost surely, 2^12043012340 is an apocalyptic number.

12043012340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12043012340 is an abundant number, since it is smaller than the sum of its proper divisors (13930837492).

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

12043012340 is a wasteful number, since it uses less digits than its factorization.

12043012340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274387 (or 16274385 counting only the distinct ones).

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

Adding to 12043012340 its reverse (4321034021), we get a palindrome (16364046361).

The spelling of 12043012340 in words is "twelve billion, forty-three million, twelve thousand, three hundred forty".