13420123040 has 48 divisors (see below), whose sum is σ = 31718469888. Its totient is φ = 5365775616.

The previous prime is 13420123039. The next prime is 13420123043. The reversal of 13420123040 is 4032102431.

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

It is not an unprimeable number, because it can be changed into a prime (13420123043) 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 7 ways as a sum of consecutive naturals, for example, 390389 + ... + 423371.

It is an arithmetic number, because the mean of its divisors is an integer number (660801456).

Almost surely, 2^13420123040 is an apocalyptic number.

13420123040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420123040 is an abundant number, since it is smaller than the sum of its proper divisors (18298346848).

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

13420123040 is a wasteful number, since it uses less digits than its factorization.

13420123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35541 (or 35533 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13420123040 its reverse (4032102431), we get a palindrome (17452225471).

The spelling of 13420123040 in words is "thirteen billion, four hundred twenty million, one hundred twenty-three thousand, forty".