239145143 has 4 divisors (see below), whose sum is σ = 239177400. Its totient is φ = 239112888.

The previous prime is 239145131. The next prime is 239145157. The reversal of 239145143 is 341541932.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 239145143 - 2¹⁰ = 239144119 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 (239105143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196 + ... + 21902.

It is an arithmetic number, because the mean of its divisors is an integer number (59794350).

Almost surely, 2^239145143 is an apocalyptic number.

239145143 is a deficient number, since it is larger than the sum of its proper divisors (32257).

239145143 is a wasteful number, since it uses less digits than its factorization.

239145143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32256.

The product of its digits is 12960, while the sum is 32.

The square root of 239145143 is about 15464.3183813578. The cubic root of 239145143 is about 620.7077791156.

The spelling of 239145143 in words is "two hundred thirty-nine million, one hundred forty-five thousand, one hundred forty-three".