138127575 has 12 divisors (see below), whose sum is σ = 228371048. Its totient is φ = 73668000.

The previous prime is 138127573. The next prime is 138127597. The reversal of 138127575 is 575721831.

It is not a de Polignac number, because 138127575 - 2¹ = 138127573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138127573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 920776 + ... + 920925.

Almost surely, 2^138127575 is an apocalyptic number.

138127575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138127575 is a deficient number, since it is larger than the sum of its proper divisors (90243473).

138127575 is a wasteful number, since it uses less digits than its factorization.

138127575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841714 (or 1841709 counting only the distinct ones).

The product of its digits is 58800, while the sum is 39.

The square root of 138127575 is about 11752.7688227073. The cubic root of 138127575 is about 516.9241184258.

The spelling of 138127575 in words is "one hundred thirty-eight million, one hundred twenty-seven thousand, five hundred seventy-five".