13120420241020 has 48 divisors (see below), whose sum is σ = 28301132946240. Its totient is φ = 5105680072704.

The previous prime is 13120420240987. The next prime is 13120420241023. The reversal of 13120420241020 is 2014202402131.

It is a junction number, because it is equal to n+sod(n) for n = 13120420240982 and 13120420241000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120420241023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4756441 + ... + 6990319.

It is an arithmetic number, because the mean of its divisors is an integer number (589606936380).

Almost surely, 2^{13120420241020} is an apocalyptic number.

13120420241020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120420241020 is an abundant number, since it is smaller than the sum of its proper divisors (15180712705220).

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

13120420241020 is a wasteful number, since it uses less digits than its factorization.

13120420241020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241862 (or 2241860 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13120420241020 its reverse (2014202402131), we get a palindrome (15134622643151).

The spelling of 13120420241020 in words is "thirteen trillion, one hundred twenty billion, four hundred twenty million, two hundred forty-one thousand, twenty".