13421442112 has 56 divisors (see below), whose sum is σ = 28935904536. Its totient is φ = 6139650048.

The previous prime is 13421442109. The next prime is 13421442161. The reversal of 13421442112 is 21124412431.

It can be written as a sum of positive squares in 4 ways, for example, as 927567936 + 12493874176 = 30456^2 + 111776^2 .

It is an unprimeable number.

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, 22638 + ... + 165394.

It is an arithmetic number, because the mean of its divisors is an integer number (516712581).

Almost surely, 2^13421442112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13421442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14467952268).

13421442112 is an abundant number, since it is smaller than the sum of its proper divisors (15514462424).

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

13421442112 is a wasteful number, since it uses less digits than its factorization.

13421442112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142895 (or 142885 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

Adding to 13421442112 its reverse (21124412431), we get a palindrome (34545854543).

The spelling of 13421442112 in words is "thirteen billion, four hundred twenty-one million, four hundred forty-two thousand, one hundred twelve".