123238 has 8 divisors (see below), whose sum is σ = 189288. Its totient is φ = 60144.

The previous prime is 123229. The next prime is 123239. The reversal of 123238 is 832321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123239) 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, 631 + ... + 802.

It is an arithmetic number, because the mean of its divisors is an integer number (23661).

2¹²³²³⁸ is an apocalyptic number.

123238 is a deficient number, since it is larger than the sum of its proper divisors (66050).

123238 is a wasteful number, since it uses less digits than its factorization.

123238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its digits is 288, while the sum is 19.

The square root of 123238 is about 351.0527025961. The cubic root of 123238 is about 49.7639540666.

Adding to 123238 its reverse (832321), we get a palindrome (955559).

It can be divided in two parts, 123 and 238, that added together give a square (361 = 19²).

The spelling of 123238 in words is "one hundred twenty-three thousand, two hundred thirty-eight".