420843434 has 16 divisors (see below), whose sum is σ = 705450816. Its totient is φ = 186626400.

The previous prime is 420843391. The next prime is 420843457. The reversal of 420843434 is 434348024.

It is a self number, because there is not a number n which added to its sum of digits gives 420843434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232382 + ... + 234185.

It is an arithmetic number, because the mean of its divisors is an integer number (44090676).

Almost surely, 2^420843434 is an apocalyptic number.

420843434 is a deficient number, since it is larger than the sum of its proper divisors (284607382).

420843434 is a wasteful number, since it uses less digits than its factorization.

420843434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466621.

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 420843434 is about 20514.4688939295. The cubic root of 420843434 is about 749.3882027041.

The spelling of 420843434 in words is "four hundred twenty million, eight hundred forty-three thousand, four hundred thirty-four".