138141 has 6 divisors (see below), whose sum is σ = 199550. Its totient is φ = 92088.

The previous prime is 138139. The next prime is 138143. The reversal of 138141 is 141831.

It is an interprime number because it is at equal distance from previous prime (138139) and next prime (138143).

It can be written as a sum of positive squares in only one way, i.e., 108900 + 29241 = 330^2 + 171^2 .

It is not a de Polignac number, because 138141 - 2¹ = 138139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7666 + ... + 7683.

2¹³⁸¹⁴¹ is an apocalyptic number.

It is an amenable number.

138141 is a deficient number, since it is larger than the sum of its proper divisors (61409).

138141 is a wasteful number, since it uses less digits than its factorization.

138141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15355 (or 15352 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 138141 is about 371.6732435890. The cubic root of 138141 is about 51.6940864977.

Adding to 138141 its reverse (141831), we get a palindrome (279972).

The spelling of 138141 in words is "one hundred thirty-eight thousand, one hundred forty-one".