239142971 has 4 divisors (see below), whose sum is σ = 239293944. Its totient is φ = 238992000.

The previous prime is 239142941. The next prime is 239142973. The reversal of 239142971 is 179241932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 239142971 - 2⁶ = 239142907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239142973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73085 + ... + 76286.

It is an arithmetic number, because the mean of its divisors is an integer number (59823486).

Almost surely, 2^239142971 is an apocalyptic number.

239142971 is a deficient number, since it is larger than the sum of its proper divisors (150973).

239142971 is a wasteful number, since it uses less digits than its factorization.

239142971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150972.

The product of its digits is 27216, while the sum is 38.

The square root of 239142971 is about 15464.2481550187. The cubic root of 239142971 is about 620.7058999480.

The spelling of 239142971 in words is "two hundred thirty-nine million, one hundred forty-two thousand, nine hundred seventy-one".