127622401 has 2 divisors, whose sum is σ = 127622402. Its totient is φ = 127622400.

The previous prime is 127622393. The next prime is 127622461. The reversal of 127622401 is 104226721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 31091776 = 9825^2 + 5576^2 .

It is an emirp because it is prime and its reverse (104226721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127622401 - 2³ = 127622393 is a prime.

It is not a weakly prime, because it can be changed into another prime (127622461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63811200 + 63811201.

It is an arithmetic number, because the mean of its divisors is an integer number (63811201).

Almost surely, 2^127622401 is an apocalyptic number.

It is an amenable number.

127622401 is a deficient number, since it is larger than the sum of its proper divisors (1).

127622401 is an equidigital number, since it uses as much as digits as its factorization.

127622401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 127622401 is about 11297.0084978281. The cubic root of 127622401 is about 503.4723642170.

The spelling of 127622401 in words is "one hundred twenty-seven million, six hundred twenty-two thousand, four hundred one".