804127007129 has 2 divisors, whose sum is σ = 804127007130. Its totient is φ = 804127007128.

The previous prime is 804127007119. The next prime is 804127007149. The reversal of 804127007129 is 921700721408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769344757129 + 34782250000 = 877123^2 + 186500^2 .

It is a cyclic number.

It is not a de Polignac number, because 804127007129 - 2²⁰ = 804125958553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (804127007119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402063503564 + 402063503565.

It is an arithmetic number, because the mean of its divisors is an integer number (402063503565).

Almost surely, 2^804127007129 is an apocalyptic number.

It is an amenable number.

804127007129 is a deficient number, since it is larger than the sum of its proper divisors (1).

804127007129 is an equidigital number, since it uses as much as digits as its factorization.

804127007129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 804127007129 in words is "eight hundred four billion, one hundred twenty-seven million, seven thousand, one hundred twenty-nine".