12424040420 has 72 divisors (see below), whose sum is σ = 28710431232. Its totient is φ = 4512720960.

The previous prime is 12424040417. The next prime is 12424040429. The reversal of 12424040420 is 2404042421.

It is not an unprimeable number, because it can be changed into a prime (12424040429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2628179 + ... + 2632901.

Almost surely, 2^12424040420 is an apocalyptic number.

12424040420 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 12424040420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14355215616).

12424040420 is an abundant number, since it is smaller than the sum of its proper divisors (16286390812).

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

12424040420 is a wasteful number, since it uses less digits than its factorization.

12424040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841 (or 5828 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 12424040420 its reverse (2404042421), we get a palindrome (14828082841).

The spelling of 12424040420 in words is "twelve billion, four hundred twenty-four million, forty thousand, four hundred twenty".