13420123340 has 96 divisors (see below), whose sum is σ = 32329632384. Its totient is φ = 4635463680.

The previous prime is 13420123331. The next prime is 13420123349. The reversal of 13420123340 is 4332102431.

It is an interprime number because it is at equal distance from previous prime (13420123331) and next prime (13420123349).

It is not an unprimeable number, because it can be changed into a prime (13420123349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 729050 + ... + 747230.

It is an arithmetic number, because the mean of its divisors is an integer number (336767004).

Almost surely, 2^13420123340 is an apocalyptic number.

13420123340 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 13420123340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16164816192).

13420123340 is an abundant number, since it is smaller than the sum of its proper divisors (18909509044).

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

13420123340 is a wasteful number, since it uses less digits than its factorization.

13420123340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387 (or 18385 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13420123340 its reverse (4332102431), we get a palindrome (17752225771).

The spelling of 13420123340 in words is "thirteen billion, four hundred twenty million, one hundred twenty-three thousand, three hundred forty".