138207 has 8 divisors (see below), whose sum is σ = 192384. Its totient is φ = 88088.

The previous prime is 138197. The next prime is 138209. The reversal of 138207 is 702831.

138207 is nontrivially palindromic in base 13.

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

It is a cyclic number.

It is not a de Polignac number, because 138207 - 2⁴ = 138191 is a prime.

138207 is a modest number, since divided by 207 gives 138 as remainder.

138207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (24048).

2¹³⁸²⁰⁷ is an apocalyptic number.

138207 is a deficient number, since it is larger than the sum of its proper divisors (54177).

138207 is a wasteful number, since it uses less digits than its factorization.

138207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 138207 is about 371.7620206530. The cubic root of 138207 is about 51.7023178615.

The spelling of 138207 in words is "one hundred thirty-eight thousand, two hundred seven".