138043127 has 2 divisors, whose sum is σ = 138043128. Its totient is φ = 138043126.

The previous prime is 138043123. The next prime is 138043229. The reversal of 138043127 is 721340831.

It is a weak prime.

It is an emirp because it is prime and its reverse (721340831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138043127 - 2² = 138043123 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138043127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138043123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69021563 + 69021564.

It is an arithmetic number, because the mean of its divisors is an integer number (69021564).

Almost surely, 2^138043127 is an apocalyptic number.

138043127 is a deficient number, since it is larger than the sum of its proper divisors (1).

138043127 is an equidigital number, since it uses as much as digits as its factorization.

138043127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 138043127 is about 11749.1755880998. The cubic root of 138043127 is about 516.8187518057.

Adding to 138043127 its reverse (721340831), we get a palindrome (859383958).

The spelling of 138043127 in words is "one hundred thirty-eight million, forty-three thousand, one hundred twenty-seven".