78130127 has 2 divisors, whose sum is σ = 78130128. Its totient is φ = 78130126.

The previous prime is 78130123. The next prime is 78130139. The reversal of 78130127 is 72103187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78130127 - 2² = 78130123 is a prime.

It is a super-2 number, since 2×78130127² = 12208633490072258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78130127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78130123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39065063 + 39065064.

It is an arithmetic number, because the mean of its divisors is an integer number (39065064).

Almost surely, 2^78130127 is an apocalyptic number.

78130127 is a deficient number, since it is larger than the sum of its proper divisors (1).

78130127 is an equidigital number, since it uses as much as digits as its factorization.

78130127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 78130127 is about 8839.1247869911. The cubic root of 78130127 is about 427.5033379811.

The spelling of 78130127 in words is "seventy-eight million, one hundred thirty thousand, one hundred twenty-seven".