127228438306 has 4 divisors (see below), whose sum is σ = 190842657462. Its totient is φ = 63614219152.

The previous prime is 127228438291. The next prime is 127228438307. The reversal of 127228438306 is 603834822721.

127228438306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79050383281 + 48178055025 = 281159^2 + 219495^2 .

It is not an unprimeable number, because it can be changed into a prime (127228438307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31807109575 + ... + 31807109578.

Almost surely, 2^127228438306 is an apocalyptic number.

127228438306 is a deficient number, since it is larger than the sum of its proper divisors (63614219156).

127228438306 is an equidigital number, since it uses as much as digits as its factorization.

127228438306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63614219155.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 127228438306 in words is "one hundred twenty-seven billion, two hundred twenty-eight million, four hundred thirty-eight thousand, three hundred six".