238129 has 4 divisors (see below), whose sum is σ = 242676. Its totient is φ = 233584.

The previous prime is 238109. The next prime is 238141. The reversal of 238129 is 921832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 216225 + 21904 = 465^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 238129 - 2⁷ = 238001 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238109) 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, 2194 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (60669).

2²³⁸¹²⁹ is an apocalyptic number.

It is an amenable number.

238129 is a deficient number, since it is larger than the sum of its proper divisors (4547).

238129 is an equidigital number, since it uses as much as digits as its factorization.

238129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546.

The product of its digits is 864, while the sum is 25.

The square root of 238129 is about 487.9846309055. The cubic root of 238129 is about 61.9827388646.

The spelling of 238129 in words is "two hundred thirty-eight thousand, one hundred twenty-nine".