420042234 has 48 divisors (see below), whose sum is σ = 897755040. Its totient is φ = 130644000.

The previous prime is 420042221. The next prime is 420042257. The reversal of 420042234 is 432240024.

It is a self number, because there is not a number n which added to its sum of digits gives 420042234.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2199079 + ... + 2199269.

It is an arithmetic number, because the mean of its divisors is an integer number (18703230).

Almost surely, 2^420042234 is an apocalyptic number.

420042234 is an abundant number, since it is smaller than the sum of its proper divisors (477712806).

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

420042234 is a wasteful number, since it uses less digits than its factorization.

420042234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420042234 is about 20494.9319101089. The cubic root of 420042234 is about 748.9123398675.

Adding to 420042234 its reverse (432240024), we get a palindrome (852282258).

The spelling of 420042234 in words is "four hundred twenty million, forty-two thousand, two hundred thirty-four".