138104 has 16 divisors (see below), whose sum is σ = 264120. Its totient is φ = 67680.

The previous prime is 138101. The next prime is 138107. The reversal of 138104 is 401831.

It is a happy number.

138104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138101) and next prime (138107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138101) 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, 347 + ... + 629.

2¹³⁸¹⁰⁴ is an apocalyptic number.

It is an amenable number.

138104 is a deficient number, since it is larger than the sum of its proper divisors (126016).

138104 is a wasteful number, since it uses less digits than its factorization.

138104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

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

The square root of 138104 is about 371.6234653517. The cubic root of 138104 is about 51.6894707983.

Adding to 138104 its reverse (401831), we get a palindrome (539935).

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

The spelling of 138104 in words is "one hundred thirty-eight thousand, one hundred four".