12040410440 has 32 divisors (see below), whose sum is σ = 27105435000. Its totient is φ = 4813584384.

The previous prime is 12040410439. The next prime is 12040410457. The reversal of 12040410440 is 4401404021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11266124164 + 774286276 = 106142^2 + 27826^2 .

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

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, 4115 + ... + 155234.

Almost surely, 2^12040410440 is an apocalyptic number.

12040410440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12040410440 is an abundant number, since it is smaller than the sum of its proper divisors (15065024560).

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

12040410440 is a wasteful number, since it uses less digits than its factorization.

12040410440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161249 (or 161245 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12040410440 its reverse (4401404021), we get a palindrome (16441814461).

The spelling of 12040410440 in words is "twelve billion, forty million, four hundred ten thousand, four hundred forty".