79142017 has 2 divisors, whose sum is σ = 79142018. Its totient is φ = 79142016.

The previous prime is 79142003. The next prime is 79142029. The reversal of 79142017 is 71024197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58384881 + 20757136 = 7641^2 + 4556^2 .

It is an emirp because it is prime and its reverse (71024197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79142017 - 2¹⁹ = 78617729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79142017.

It is not a weakly prime, because it can be changed into another prime (79142047) 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, 39571008 + 39571009.

It is an arithmetic number, because the mean of its divisors is an integer number (39571009).

Almost surely, 2^79142017 is an apocalyptic number.

It is an amenable number.

79142017 is a deficient number, since it is larger than the sum of its proper divisors (1).

79142017 is an equidigital number, since it uses as much as digits as its factorization.

79142017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 79142017 is about 8896.1799105009. The cubic root of 79142017 is about 429.3410078909.

The spelling of 79142017 in words is "seventy-nine million, one hundred forty-two thousand, seventeen".