420330434 has 16 divisors (see below), whose sum is σ = 653834688. Its totient is φ = 202496112.

The previous prime is 420330433. The next prime is 420330467. The reversal of 420330434 is 434033024.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420330433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19952 + ... + 35195.

It is an arithmetic number, because the mean of its divisors is an integer number (40864668).

Almost surely, 2^420330434 is an apocalyptic number.

420330434 is a deficient number, since it is larger than the sum of its proper divisors (233504254).

420330434 is a wasteful number, since it uses less digits than its factorization.

420330434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55289.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 420330434 is about 20501.9617110168. The cubic root of 420330434 is about 749.0835823239.

Adding to 420330434 its reverse (434033024), we get a palindrome (854363458).

The spelling of 420330434 in words is "four hundred twenty million, three hundred thirty thousand, four hundred thirty-four".