13421420340 has 48 divisors (see below), whose sum is σ = 37600483200. Its totient is φ = 3577092480.

The previous prime is 13421420323. The next prime is 13421420351. The reversal of 13421420340 is 4302412431.

It is a self number, because there is not a number n which added to its sum of digits gives 13421420340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51561 + ... + 171759.

It is an arithmetic number, because the mean of its divisors is an integer number (783343400).

Almost surely, 2^13421420340 is an apocalyptic number.

13421420340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421420340 is an abundant number, since it is smaller than the sum of its proper divisors (24179062860).

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

13421420340 is a wasteful number, since it uses less digits than its factorization.

13421420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122072 (or 122070 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13421420340 its reverse (4302412431), we get a palindrome (17723832771).

The spelling of 13421420340 in words is "thirteen billion, four hundred twenty-one million, four hundred twenty thousand, three hundred forty".