420434323 has 2 divisors, whose sum is σ = 420434324. Its totient is φ = 420434322.

The previous prime is 420434321. The next prime is 420434341. The reversal of 420434323 is 323434024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420434323 - 2¹ = 420434321 is a prime.

Together with 420434321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420434321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210217161 + 210217162.

It is an arithmetic number, because the mean of its divisors is an integer number (210217162).

Almost surely, 2^420434323 is an apocalyptic number.

420434323 is a deficient number, since it is larger than the sum of its proper divisors (1).

420434323 is an equidigital number, since it uses as much as digits as its factorization.

420434323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 420434323 is about 20504.4951900797. The cubic root of 420434323 is about 749.1452918167.

Adding to 420434323 its reverse (323434024), we get a palindrome (743868347).

The spelling of 420434323 in words is "four hundred twenty million, four hundred thirty-four thousand, three hundred twenty-three".