420403332 has 12 divisors (see below), whose sum is σ = 980941136. Its totient is φ = 140134440.

The previous prime is 420403331. The next prime is 420403349. The reversal of 420403332 is 233304024.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 420403299 and 420403308.

It is not an unprimeable number, because it can be changed into a prime (420403331) 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, 17516794 + ... + 17516817.

Almost surely, 2^420403332 is an apocalyptic number.

It is an amenable number.

420403332 is an abundant number, since it is smaller than the sum of its proper divisors (560537804).

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

420403332 is a wasteful number, since it uses less digits than its factorization.

420403332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35033618 (or 35033616 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 420403332 is about 20503.7394638149. The cubic root of 420403332 is about 749.1268843977.

Adding to 420403332 its reverse (233304024), we get a palindrome (653707356).

The spelling of 420403332 in words is "four hundred twenty million, four hundred three thousand, three hundred thirty-two".