30420122129 has 2 divisors, whose sum is σ = 30420122130. Its totient is φ = 30420122128.

The previous prime is 30420122059. The next prime is 30420122203. The reversal of 30420122129 is 92122102403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21228490000 + 9191632129 = 145700^2 + 95873^2 .

It is a cyclic number.

It is not a de Polignac number, because 30420122129 - 2¹⁶ = 30420056593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30420122098 and 30420122107.

It is not a weakly prime, because it can be changed into another prime (30420128129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210061064 + 15210061065.

It is an arithmetic number, because the mean of its divisors is an integer number (15210061065).

Almost surely, 2^30420122129 is an apocalyptic number.

It is an amenable number.

30420122129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420122129 is an equidigital number, since it uses as much as digits as its factorization.

30420122129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 30420122129 in words is "thirty billion, four hundred twenty million, one hundred twenty-two thousand, one hundred twenty-nine".