420343039 has 2 divisors, whose sum is σ = 420343040. Its totient is φ = 420343038.

The previous prime is 420343019. The next prime is 420343067. The reversal of 420343039 is 930343024.

It is an a-pointer prime, because the next prime (420343067) can be obtained adding 420343039 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420343039 - 2²¹ = 418245887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 420342998 and 420343016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420343019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210171519 + 210171520.

It is an arithmetic number, because the mean of its divisors is an integer number (210171520).

Almost surely, 2^420343039 is an apocalyptic number.

420343039 is a deficient number, since it is larger than the sum of its proper divisors (1).

420343039 is an equidigital number, since it uses as much as digits as its factorization.

420343039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 420343039 is about 20502.2691183196. The cubic root of 420343039 is about 749.0910701663.

The spelling of 420343039 in words is "four hundred twenty million, three hundred forty-three thousand, thirty-nine".