123038 has 4 divisors (see below), whose sum is σ = 184560. Its totient is φ = 61518.

The previous prime is 123031. The next prime is 123049. The reversal of 123038 is 830321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 830321 = 101 ⋅8221.

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031) by changing a digit.

123038 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30758 + ... + 30761.

It is an arithmetic number, because the mean of its divisors is an integer number (46140).

2¹²³⁰³⁸ is an apocalyptic number.

123038 is a deficient number, since it is larger than the sum of its proper divisors (61522).

123038 is an equidigital number, since it uses as much as digits as its factorization.

123038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61521.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 123038 is about 350.7677294165. The cubic root of 123038 is about 49.7370192475.

Adding to 123038 its reverse (830321), we get a palindrome (953359).

The spelling of 123038 in words is "one hundred twenty-three thousand, thirty-eight".