127241305638 has 16 divisors (see below), whose sum is σ = 255401324400. Its totient is φ = 42260649696.

The previous prime is 127241305621. The next prime is 127241305661. The reversal of 127241305638 is 836503142721.

It is a self number, because there is not a number n which added to its sum of digits gives 127241305638.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38277913 + ... + 38281236.

It is an arithmetic number, because the mean of its divisors is an integer number (15962582775).

Almost surely, 2^127241305638 is an apocalyptic number.

127241305638 is an abundant number, since it is smaller than the sum of its proper divisors (128160018762).

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

127241305638 is a wasteful number, since it uses less digits than its factorization.

127241305638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76559431.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 127241305638 in words is "one hundred twenty-seven billion, two hundred forty-one million, three hundred five thousand, six hundred thirty-eight".