138023127 has 18 divisors (see below), whose sum is σ = 219140376. Its totient is φ = 83649720.

The previous prime is 138023117. The next prime is 138023159. The reversal of 138023127 is 721320831.

138023127 is nontrivially palindromic in base 15.

It is not a de Polignac number, because 138023127 - 2⁴ = 138023111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138023127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138023117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 62283 + ... + 64460.

Almost surely, 2^138023127 is an apocalyptic number.

138023127 is a deficient number, since it is larger than the sum of its proper divisors (81117249).

138023127 is a wasteful number, since it uses less digits than its factorization.

138023127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126771 (or 126757 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 138023127 is about 11748.3244337225. The cubic root of 138023127 is about 516.7937913109.

Adding to 138023127 its reverse (721320831), we get a palindrome (859343958).

The spelling of 138023127 in words is "one hundred thirty-eight million, twenty-three thousand, one hundred twenty-seven".