127338121 has 2 divisors, whose sum is σ = 127338122. Its totient is φ = 127338120.

The previous prime is 127338091. The next prime is 127338137. The reversal of 127338121 is 121833721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94848121 + 32490000 = 9739^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 127338121 - 2⁵ = 127338089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127338121.

It is not a weakly prime, because it can be changed into another prime (127338161) by changing a digit.

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 as a sum of consecutive naturals, namely, 63669060 + 63669061.

It is an arithmetic number, because the mean of its divisors is an integer number (63669061).

Almost surely, 2^127338121 is an apocalyptic number.

It is an amenable number.

127338121 is a deficient number, since it is larger than the sum of its proper divisors (1).

127338121 is an equidigital number, since it uses as much as digits as its factorization.

127338121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 127338121 is about 11284.4193913555. The cubic root of 127338121 is about 503.0982566241.

The spelling of 127338121 in words is "one hundred twenty-seven million, three hundred thirty-eight thousand, one hundred twenty-one".