420555234 has 64 divisors (see below), whose sum is σ = 972702720. Its totient is φ = 119880000.

The previous prime is 420555229. The next prime is 420555241. The reversal of 420555234 is 432555024.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188244 + ... + 190464.

It is an arithmetic number, because the mean of its divisors is an integer number (15198480).

Almost surely, 2^420555234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420555234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486351360).

420555234 is an abundant number, since it is smaller than the sum of its proper divisors (552147486).

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

420555234 is a wasteful number, since it uses less digits than its factorization.

420555234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 420555234 is about 20507.4433803924. The cubic root of 420555234 is about 749.2170994845.

The spelling of 420555234 in words is "four hundred twenty million, five hundred fifty-five thousand, two hundred thirty-four".