13260042405 has 24 divisors (see below), whose sum is σ = 23010054912. Its totient is φ = 7064028384.

The previous prime is 13260042391. The next prime is 13260042407. The reversal of 13260042405 is 50424006231.

13260042405 is a `hidden beast` number, since 1 + 32 + 600 + 4 + 24 + 0 + 5 = 666.

It is not a de Polignac number, because 13260042405 - 2²⁰ = 13258993829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260042407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126189 + ... + 206018.

It is an arithmetic number, because the mean of its divisors is an integer number (958752288).

Almost surely, 2^13260042405 is an apocalyptic number.

13260042405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13260042405 is a deficient number, since it is larger than the sum of its proper divisors (9750012507).

13260042405 is a wasteful number, since it uses less digits than its factorization.

13260042405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333105 (or 333102 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 13260042405 its reverse (50424006231), we get a palindrome (63684048636).

The spelling of 13260042405 in words is "thirteen billion, two hundred sixty million, forty-two thousand, four hundred five".