12440134132 has 24 divisors (see below), whose sum is σ = 23309846280. Its totient is φ = 5788400640.

The previous prime is 12440134127. The next prime is 12440134153. The reversal of 12440134132 is 23143104421.

It can be written as a sum of positive squares in 4 ways, for example, as 829209616 + 11610924516 = 28796^2 + 107754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12440134097 and 12440134106.

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, 1021719 + ... + 1033822.

It is an arithmetic number, because the mean of its divisors is an integer number (971243595).

Almost surely, 2^12440134132 is an apocalyptic number.

It is an amenable number.

12440134132 is a deficient number, since it is larger than the sum of its proper divisors (10869712148).

12440134132 is a wasteful number, since it uses less digits than its factorization.

12440134132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055651 (or 2055649 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12440134132 its reverse (23143104421), we get a palindrome (35583238553).

The spelling of 12440134132 in words is "twelve billion, four hundred forty million, one hundred thirty-four thousand, one hundred thirty-two".