239122137 has 4 divisors (see below), whose sum is σ = 318829520. Its totient is φ = 159414756.

The previous prime is 239122111. The next prime is 239122159. The reversal of 239122137 is 731221932.

239122137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 239122137 - 2⁶ = 239122073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239122837) 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, 39853687 + ... + 39853692.

It is an arithmetic number, because the mean of its divisors is an integer number (79707380).

Almost surely, 2^239122137 is an apocalyptic number.

It is an amenable number.

239122137 is a deficient number, since it is larger than the sum of its proper divisors (79707383).

239122137 is an equidigital number, since it uses as much as digits as its factorization.

239122137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79707382.

The product of its digits is 4536, while the sum is 30.

The square root of 239122137 is about 15463.5745220825. The cubic root of 239122137 is about 620.6878742425.

The spelling of 239122137 in words is "two hundred thirty-nine million, one hundred twenty-two thousand, one hundred thirty-seven".