13040423120 has 20 divisors (see below), whose sum is σ = 30318983940. Its totient is φ = 5216169216.

The previous prime is 13040423093. The next prime is 13040423161. The reversal of 13040423120 is 2132404031.

It can be written as a sum of positive squares in 2 ways, for example, as 3703452736 + 9336970384 = 60856^2 + 96628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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

It is a junction number, because it is equal to n+sod(n) for n = 13040423092 and 13040423101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81502565 + ... + 81502724.

It is an arithmetic number, because the mean of its divisors is an integer number (1515949197).

Almost surely, 2^13040423120 is an apocalyptic number.

13040423120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13040423120 is an abundant number, since it is smaller than the sum of its proper divisors (17278560820).

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

13040423120 is a wasteful number, since it uses less digits than its factorization.

13040423120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163005302 (or 163005296 counting only the distinct ones).

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

Adding to 13040423120 its reverse (2132404031), we get a palindrome (15172827151).

The spelling of 13040423120 in words is "thirteen billion, forty million, four hundred twenty-three thousand, one hundred twenty".