420404232 has 16 divisors (see below), whose sum is σ = 1051010640. Its totient is φ = 140134736.

The previous prime is 420404219. The next prime is 420404239. The reversal of 420404232 is 232404024.

It is a junction number, because it is equal to n+sod(n) for n = 420404199 and 420404208.

It is not an unprimeable number, because it can be changed into a prime (420404239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8758398 + ... + 8758445.

It is an arithmetic number, because the mean of its divisors is an integer number (65688165).

Almost surely, 2^420404232 is an apocalyptic number.

It is an amenable number.

420404232 is an abundant number, since it is smaller than the sum of its proper divisors (630606408).

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

420404232 is a wasteful number, since it uses less digits than its factorization.

420404232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17516852 (or 17516848 counting only the distinct ones).

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

The square root of 420404232 is about 20503.7614110192. The cubic root of 420404232 is about 749.1274189746.

Adding to 420404232 its reverse (232404024), we get a palindrome (652808256).

The spelling of 420404232 in words is "four hundred twenty million, four hundred four thousand, two hundred thirty-two".