138935127 has 4 divisors (see below), whose sum is σ = 185246840. Its totient is φ = 92623416.

The previous prime is 138935117. The next prime is 138935179. The reversal of 138935127 is 721539831.

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

It is not a de Polignac number, because 138935127 - 2¹¹ = 138933079 is a prime.

It is a super-2 number, since 2×138935127² = 38605939029012258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138935117) 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, 23155852 + ... + 23155857.

It is an arithmetic number, because the mean of its divisors is an integer number (46311710).

Almost surely, 2^138935127 is an apocalyptic number.

138935127 is a deficient number, since it is larger than the sum of its proper divisors (46311713).

138935127 is an equidigital number, since it uses as much as digits as its factorization.

138935127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46311712.

The product of its digits is 45360, while the sum is 39.

The square root of 138935127 is about 11787.0745734470. The cubic root of 138935127 is about 517.9295469741.

The spelling of 138935127 in words is "one hundred thirty-eight million, nine hundred thirty-five thousand, one hundred twenty-seven".