420435506 has 8 divisors (see below), whose sum is σ = 631263360. Its totient is φ = 210014388.

The previous prime is 420435493. The next prime is 420435511. The reversal of 420435506 is 605534024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99086 + ... + 103241.

It is an arithmetic number, because the mean of its divisors is an integer number (78907920).

Almost surely, 2^420435506 is an apocalyptic number.

420435506 is a deficient number, since it is larger than the sum of its proper divisors (210827854).

420435506 is a wasteful number, since it uses less digits than its factorization.

420435506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203368.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 420435506 is about 20504.5240373923. The cubic root of 420435506 is about 749.1459944536.

The spelling of 420435506 in words is "four hundred twenty million, four hundred thirty-five thousand, five hundred six".