421610020 has 48 divisors (see below), whose sum is σ = 955100160. Its totient is φ = 155408256.

The previous prime is 421610017. The next prime is 421610027. The reversal of 421610020 is 20016124.

It is a junction number, because it is equal to n+sod(n) for n = 421609976 and 421610003.

It is not an unprimeable number, because it can be changed into a prime (421610027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223441 + ... + 225319.

It is an arithmetic number, because the mean of its divisors is an integer number (19897920).

Almost surely, 2^421610020 is an apocalyptic number.

It is an amenable number.

421610020 is an abundant number, since it is smaller than the sum of its proper divisors (533490140).

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

421610020 is a wasteful number, since it uses less digits than its factorization.

421610020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 421610020 is about 20533.1444255379. The cubic root of 421610020 is about 749.8429419275.

Adding to 421610020 its reverse (20016124), we get a palindrome (441626144).

The spelling of 421610020 in words is "four hundred twenty-one million, six hundred ten thousand, twenty".