127500138 has 12 divisors (see below), whose sum is σ = 276250338. Its totient is φ = 42500040.

The previous prime is 127500137. The next prime is 127500151. The reversal of 127500138 is 831005721.

127500138 is a `hidden beast` number, since 1 + 27 + 500 + 138 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114126489 + 13373649 = 10683^2 + 3657^2 .

It is not an unprimeable number, because it can be changed into a prime (127500133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3541653 + ... + 3541688.

Almost surely, 2^127500138 is an apocalyptic number.

127500138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

127500138 is an abundant number, since it is smaller than the sum of its proper divisors (148750200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127500138 is a wasteful number, since it uses less digits than its factorization.

127500138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083349 (or 7083346 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 127500138 is about 11291.5959013773. The cubic root of 127500138 is about 503.3115363668.

Adding to 127500138 its reverse (831005721), we get a palindrome (958505859).

The spelling of 127500138 in words is "one hundred twenty-seven million, five hundred thousand, one hundred thirty-eight".