13120404420340 has 24 divisors (see below), whose sum is σ = 31488970609152. Its totient is φ = 4498424372640.

The previous prime is 13120404420293. The next prime is 13120404420359. The reversal of 13120404420340 is 4302440402131.

It is a super-2 number, since 2×13120404420340² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 13120404420299 and 13120404420308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46858587076 + ... + 46858587355.

It is an arithmetic number, because the mean of its divisors is an integer number (1312040442048).

Almost surely, 2^{13120404420340} is an apocalyptic number.

13120404420340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120404420340 is an abundant number, since it is smaller than the sum of its proper divisors (18368566188812).

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

13120404420340 is a wasteful number, since it uses less digits than its factorization.

13120404420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93717174447 (or 93717174445 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 13120404420340 its reverse (4302440402131), we get a palindrome (17422844822471).

The spelling of 13120404420340 in words is "thirteen trillion, one hundred twenty billion, four hundred four million, four hundred twenty thousand, three hundred forty".