13240234040 has 64 divisors (see below), whose sum is σ = 32580234720. Its totient is φ = 4802560000.

The previous prime is 13240234003. The next prime is 13240234043. The reversal of 13240234040 is 4043204231.

It is a junction number, because it is equal to n+sod(n) for n = 13240233997 and 13240234015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240234043) 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, 138920 + ... + 213960.

Almost surely, 2^13240234040 is an apocalyptic number.

13240234040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13240234040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16290117360).

13240234040 is an abundant number, since it is smaller than the sum of its proper divisors (19340000680).

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

13240234040 is a wasteful number, since it uses less digits than its factorization.

13240234040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75464 (or 75460 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 13240234040 its reverse (4043204231), we get a palindrome (17283438271).

The spelling of 13240234040 in words is "thirteen billion, two hundred forty million, two hundred thirty-four thousand, forty".