127920071 has 2 divisors, whose sum is σ = 127920072. Its totient is φ = 127920070.

The previous prime is 127920031. The next prime is 127920077. The reversal of 127920071 is 170029721.

It is a strong prime.

It is an emirp because it is prime and its reverse (170029721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127920071 - 2⁶ = 127920007 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127920077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63960035 + 63960036.

It is an arithmetic number, because the mean of its divisors is an integer number (63960036).

Almost surely, 2^127920071 is an apocalyptic number.

127920071 is a deficient number, since it is larger than the sum of its proper divisors (1).

127920071 is an equidigital number, since it uses as much as digits as its factorization.

127920071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 127920071 is about 11310.1755512459. The cubic root of 127920071 is about 503.8634978764.

Adding to 127920071 its reverse (170029721), we get a palindrome (297949792).

The spelling of 127920071 in words is "one hundred twenty-seven million, nine hundred twenty thousand, seventy-one".