13971142 has 8 divisors (see below), whose sum is σ = 21632832. Its totient is φ = 6760200.

The previous prime is 13971121. The next prime is 13971149. The reversal of 13971142 is 24117931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13971142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13971149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112609 + ... + 112732.

It is an arithmetic number, because the mean of its divisors is an integer number (2704104).

Almost surely, 2^13971142 is an apocalyptic number.

13971142 is a deficient number, since it is larger than the sum of its proper divisors (7661690).

13971142 is a wasteful number, since it uses less digits than its factorization.

13971142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225374.

The product of its digits is 1512, while the sum is 28.

The square root of 13971142 is about 3737.7990850232. The cubic root of 13971142 is about 240.8485127770.

The spelling of 13971142 in words is "thirteen million, nine hundred seventy-one thousand, one hundred forty-two".