306122429 has 2 divisors, whose sum is σ = 306122430. Its totient is φ = 306122428.

The previous prime is 306122389. The next prime is 306122431. The reversal of 306122429 is 924221603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226502500 + 79619929 = 15050^2 + 8923^2 .

It is a cyclic number.

It is not a de Polignac number, because 306122429 - 2²⁸ = 37686973 is a prime.

Together with 306122431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306122449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153061214 + 153061215.

It is an arithmetic number, because the mean of its divisors is an integer number (153061215).

Almost surely, 2^306122429 is an apocalyptic number.

It is an amenable number.

306122429 is a deficient number, since it is larger than the sum of its proper divisors (1).

306122429 is an equidigital number, since it uses as much as digits as its factorization.

306122429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 306122429 is about 17496.3547346297. The cubic root of 306122429 is about 673.9562682401.

The spelling of 306122429 in words is "three hundred six million, one hundred twenty-two thousand, four hundred twenty-nine".