138806127 has 48 divisors (see below), whose sum is σ = 219168768. Its totient is φ = 84395520.

The previous prime is 138806117. The next prime is 138806147. The reversal of 138806127 is 721608831.

138806127 is a `hidden beast` number, since 1 + 38 + 8 + 0 + 612 + 7 = 666.

It is not a de Polignac number, because 138806127 - 2⁸ = 138805871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138806091 and 138806100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138806117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 622338 + ... + 622560.

It is an arithmetic number, because the mean of its divisors is an integer number (4566016).

Almost surely, 2^138806127 is an apocalyptic number.

138806127 is a deficient number, since it is larger than the sum of its proper divisors (80362641).

138806127 is a wasteful number, since it uses less digits than its factorization.

138806127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 138806127 is about 11781.6012069667. The cubic root of 138806127 is about 517.7691997146.

The spelling of 138806127 in words is "one hundred thirty-eight million, eight hundred six thousand, one hundred twenty-seven".