12240040123 has 16 divisors (see below), whose sum is σ = 12493578240. Its totient is φ = 11989819296.

The previous prime is 12240040117. The next prime is 12240040147. The reversal of 12240040123 is 32104004221.

It is a cyclic number.

It is not a de Polignac number, because 12240040123 - 2⁵ = 12240040091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12240040123.

It is not an unprimeable number, because it can be changed into a prime (12240040523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3863286 + ... + 3866452.

It is an arithmetic number, because the mean of its divisors is an integer number (780848640).

Almost surely, 2^12240040123 is an apocalyptic number.

12240040123 is a deficient number, since it is larger than the sum of its proper divisors (253538117).

12240040123 is a wasteful number, since it uses less digits than its factorization.

12240040123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12240040123 its reverse (32104004221), we get a palindrome (44344044344).

The spelling of 12240040123 in words is "twelve billion, two hundred forty million, forty thousand, one hundred twenty-three".