13872143 has 4 divisors (see below), whose sum is σ = 14006928. Its totient is φ = 13737360.

The previous prime is 13872137. The next prime is 13872169. The reversal of 13872143 is 34127831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34127831 = 757 ⋅45083.

It is a cyclic number.

It is not a de Polignac number, because 13872143 - 2¹⁰ = 13871119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872113) 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, 67238 + ... + 67443.

It is an arithmetic number, because the mean of its divisors is an integer number (3501732).

Almost surely, 2^13872143 is an apocalyptic number.

13872143 is a deficient number, since it is larger than the sum of its proper divisors (134785).

13872143 is a wasteful number, since it uses less digits than its factorization.

13872143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134784.

The product of its digits is 4032, while the sum is 29.

The square root of 13872143 is about 3724.5325881243. The cubic root of 13872143 is about 240.2782825278.

Adding to 13872143 its reverse (34127831), we get a palindrome (47999974).

The spelling of 13872143 in words is "thirteen million, eight hundred seventy-two thousand, one hundred forty-three".