13021040424 has 64 divisors (see below), whose sum is σ = 37904941440. Its totient is φ = 3650100480.

The previous prime is 13021040413. The next prime is 13021040443. The reversal of 13021040424 is 42404012031.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13021040424.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 722287 + ... + 740094.

It is an arithmetic number, because the mean of its divisors is an integer number (592264710).

Almost surely, 2^13021040424 is an apocalyptic number.

13021040424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13021040424 is an abundant number, since it is smaller than the sum of its proper divisors (24883901016).

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

13021040424 is a wasteful number, since it uses less digits than its factorization.

13021040424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462450 (or 1462446 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 13021040424 its reverse (42404012031), we get a palindrome (55425052455).

The spelling of 13021040424 in words is "thirteen billion, twenty-one million, forty thousand, four hundred twenty-four".