127157838 has 16 divisors (see below), whose sum is σ = 254578896. Its totient is φ = 42342080.

The previous prime is 127157819. The next prime is 127157867. The reversal of 127157838 is 838751721.

It is a self number, because there is not a number n which added to its sum of digits gives 127157838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4383 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (15911181).

Almost surely, 2^127157838 is an apocalyptic number.

127157838 is an abundant number, since it is smaller than the sum of its proper divisors (127421058).

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

127157838 is a wasteful number, since it uses less digits than its factorization.

127157838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21939.

The product of its digits is 94080, while the sum is 42.

The square root of 127157838 is about 11276.4284239293. The cubic root of 127157838 is about 502.8607186954.

The spelling of 127157838 in words is "one hundred twenty-seven million, one hundred fifty-seven thousand, eight hundred thirty-eight".