138260127 has 4 divisors (see below), whose sum is σ = 184346840. Its totient is φ = 92173416.

The previous prime is 138260119. The next prime is 138260141. The reversal of 138260127 is 721062831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 138260127 - 2³ = 138260119 is a prime.

It is a super-2 number, since 2×138260127² = 38231725436112258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138260094 and 138260103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138260147) 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 in 3 ways as a sum of consecutive naturals, for example, 23043352 + ... + 23043357.

It is an arithmetic number, because the mean of its divisors is an integer number (46086710).

Almost surely, 2^138260127 is an apocalyptic number.

138260127 is a deficient number, since it is larger than the sum of its proper divisors (46086713).

138260127 is an equidigital number, since it uses as much as digits as its factorization.

138260127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46086712.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 138260127 is about 11758.4066522637. The cubic root of 138260127 is about 517.0894183176.

The spelling of 138260127 in words is "one hundred thirty-eight million, two hundred sixty thousand, one hundred twenty-seven".