12103032440 has 16 divisors (see below), whose sum is σ = 27231823080. Its totient is φ = 4841212960.

The previous prime is 12103032419. The next prime is 12103032443. The reversal of 12103032440 is 4423030121.

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 (12103032443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151287866 + ... + 151287945.

Almost surely, 2^12103032440 is an apocalyptic number.

12103032440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103032440 is an abundant number, since it is smaller than the sum of its proper divisors (15128790640).

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

12103032440 is a wasteful number, since it uses less digits than its factorization.

12103032440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302575822 (or 302575818 counting only the distinct ones).

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

Adding to 12103032440 its reverse (4423030121), we get a palindrome (16526062561).

The spelling of 12103032440 in words is "twelve billion, one hundred three million, thirty-two thousand, four hundred forty".