104138 has 4 divisors (see below), whose sum is σ = 156210. Its totient is φ = 52068.

The previous prime is 104123. The next prime is 104147. The reversal of 104138 is 831401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831401 = 29 ⋅28669.

It can be written as a sum of positive squares in only one way, i.e., 69169 + 34969 = 263^2 + 187^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26033 + ... + 26036.

2¹⁰⁴¹³⁸ is an apocalyptic number.

104138 is a deficient number, since it is larger than the sum of its proper divisors (52072).

104138 is an equidigital number, since it uses as much as digits as its factorization.

104138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52071.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 104138 is about 322.7041989191. The cubic root of 104138 is about 47.0474848295.

Adding to 104138 its reverse (831401), we get a palindrome (935539).

It can be divided in two parts, 104 and 138, that added together give a palindrome (242).

The spelling of 104138 in words is "one hundred four thousand, one hundred thirty-eight".