127020077 has 2 divisors, whose sum is σ = 127020078. Its totient is φ = 127020076.

The previous prime is 127020067. The next prime is 127020079. The reversal of 127020077 is 770020721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 52041796 = 8659^2 + 7214^2 .

It is a cyclic number.

It is not a de Polignac number, because 127020077 - 2²⁴ = 110242861 is a prime.

It is a super-2 number, since 2×127020077² = 32268199922171858, which contains 22 as substring.

Together with 127020079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127020079) 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, 63510038 + 63510039.

It is an arithmetic number, because the mean of its divisors is an integer number (63510039).

Almost surely, 2^127020077 is an apocalyptic number.

It is an amenable number.

127020077 is a deficient number, since it is larger than the sum of its proper divisors (1).

127020077 is an equidigital number, since it uses as much as digits as its factorization.

127020077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 127020077 is about 11270.3184072146. The cubic root of 127020077 is about 502.6790556833.

Adding to 127020077 its reverse (770020721), we get a palindrome (897040798).

The spelling of 127020077 in words is "one hundred twenty-seven million, twenty thousand, seventy-seven".