13971042 has 96 divisors (see below), whose sum is σ = 35380800. Its totient is φ = 4105728.

The previous prime is 13971017. The next prime is 13971047. The reversal of 13971042 is 24017931.

13971042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13970997 and 13971015.

It is not an unprimeable number, because it can be changed into a prime (13971047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156934 + ... + 157022.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^13971042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13971042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17690400).

13971042 is an abundant number, since it is smaller than the sum of its proper divisors (21409758).

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

13971042 is a wasteful number, since it uses less digits than its factorization.

13971042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13971042 is about 3737.7857081433. The cubic root of 13971042 is about 240.8479381423.

Adding to 13971042 its reverse (24017931), we get a palindrome (37988973).

The spelling of 13971042 in words is "thirteen million, nine hundred seventy-one thousand, forty-two".