127664941 has 2 divisors, whose sum is σ = 127664942. Its totient is φ = 127664940.

The previous prime is 127664923. The next prime is 127664947. The reversal of 127664941 is 149466721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96628900 + 31036041 = 9830^2 + 5571^2 .

It is a cyclic number.

It is not a de Polignac number, because 127664941 - 2⁷ = 127664813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127664894 and 127664903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127664947) 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, 63832470 + 63832471.

It is an arithmetic number, because the mean of its divisors is an integer number (63832471).

Almost surely, 2^127664941 is an apocalyptic number.

It is an amenable number.

127664941 is a deficient number, since it is larger than the sum of its proper divisors (1).

127664941 is an equidigital number, since it uses as much as digits as its factorization.

127664941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 127664941 is about 11298.8911402845. The cubic root of 127664941 is about 503.5282983240.

The spelling of 127664941 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, nine hundred forty-one".