13120142020040 has 64 divisors (see below), whose sum is σ = 32504956896960. Its totient is φ = 4726372299520.

The previous prime is 13120142019997. The next prime is 13120142020049. The reversal of 13120142020040 is 4002024102131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13120142019994 and 13120142020021.

It is not an unprimeable number, because it can be changed into a prime (13120142020049) 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, 139291727 + ... + 139385886.

It is an arithmetic number, because the mean of its divisors is an integer number (507889951515).

Almost surely, 2^{13120142020040} is an apocalyptic number.

13120142020040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120142020040 is an abundant number, since it is smaller than the sum of its proper divisors (19384814876920).

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

13120142020040 is a wasteful number, since it uses less digits than its factorization.

13120142020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278677742 (or 278677738 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 13120142020040 its reverse (4002024102131), we get a palindrome (17122166122171).

The spelling of 13120142020040 in words is "thirteen trillion, one hundred twenty billion, one hundred forty-two million, twenty thousand, forty".