420403434 has 32 divisors (see below), whose sum is σ = 919434240. Its totient is φ = 127090800.

The previous prime is 420403429. The next prime is 420403441. The reversal of 420403434 is 434304024.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21057 + ... + 35835.

It is an arithmetic number, because the mean of its divisors is an integer number (28732320).

Almost surely, 2^420403434 is an apocalyptic number.

420403434 is an abundant number, since it is smaller than the sum of its proper divisors (499030806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420403434 is a wasteful number, since it uses less digits than its factorization.

420403434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15226.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 420403434 is about 20503.7419511659. The cubic root of 420403434 is about 749.1269449832.

Adding to 420403434 its reverse (434304024), we get a palindrome (854707458).

The spelling of 420403434 in words is "four hundred twenty million, four hundred three thousand, four hundred thirty-four".