138379127 has 2 divisors, whose sum is σ = 138379128. Its totient is φ = 138379126.

The previous prime is 138379123. The next prime is 138379151. The reversal of 138379127 is 721973831.

It is a weak prime.

It is an emirp because it is prime and its reverse (721973831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138379127 - 2² = 138379123 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138379121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69189563 + 69189564.

It is an arithmetic number, because the mean of its divisors is an integer number (69189564).

Almost surely, 2^138379127 is an apocalyptic number.

138379127 is a deficient number, since it is larger than the sum of its proper divisors (1).

138379127 is an equidigital number, since it uses as much as digits as its factorization.

138379127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 138379127 is about 11763.4657733170. The cubic root of 138379127 is about 517.2377281174.

The spelling of 138379127 in words is "one hundred thirty-eight million, three hundred seventy-nine thousand, one hundred twenty-seven".