138574 has 8 divisors (see below), whose sum is σ = 209520. Its totient is φ = 68736.

The previous prime is 138571. The next prime is 138577. The reversal of 138574 is 475831.

138574 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 (138571) and next prime (138577).

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138571) 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, 207 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (26190).

2¹³⁸⁵⁷⁴ is an apocalyptic number.

138574 is a deficient number, since it is larger than the sum of its proper divisors (70946).

138574 is a wasteful number, since it uses less digits than its factorization.

138574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its digits is 3360, while the sum is 28.

The square root of 138574 is about 372.2552887468. The cubic root of 138574 is about 51.7480414982.

It can be divided in two parts, 13857 and 4, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 138574 in words is "one hundred thirty-eight thousand, five hundred seventy-four".