420433424309 has 2 divisors, whose sum is σ = 420433424310. Its totient is φ = 420433424308.

The previous prime is 420433424293. The next prime is 420433424339. The reversal of 420433424309 is 903424334024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378532562500 + 41900861809 = 615250^2 + 204697^2 .

It is a cyclic number.

It is not a de Polignac number, because 420433424309 - 2⁴ = 420433424293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420433424339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210216712154 + 210216712155.

It is an arithmetic number, because the mean of its divisors is an integer number (210216712155).

Almost surely, 2^420433424309 is an apocalyptic number.

It is an amenable number.

420433424309 is a deficient number, since it is larger than the sum of its proper divisors (1).

420433424309 is an equidigital number, since it uses as much as digits as its factorization.

420433424309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 420433424309 in words is "four hundred twenty billion, four hundred thirty-three million, four hundred twenty-four thousand, three hundred nine".