421020612 has 48 divisors (see below), whose sum is σ = 1138999680. Its totient is φ = 134237664.

The previous prime is 421020599. The next prime is 421020619. The reversal of 421020612 is 216020124.

421020612 is a `hidden beast` number, since 42 + 10 + 2 + 0 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (421020619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82263 + ... + 87230.

It is an arithmetic number, because the mean of its divisors is an integer number (23729160).

Almost surely, 2^421020612 is an apocalyptic number.

It is an amenable number.

421020612 is an abundant number, since it is smaller than the sum of its proper divisors (717979068).

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

421020612 is a wasteful number, since it uses less digits than its factorization.

421020612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169529 (or 169521 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 421020612 is about 20518.7868062417. The cubic root of 421020612 is about 749.4933538233.

Adding to 421020612 its reverse (216020124), we get a palindrome (637040736).

The spelling of 421020612 in words is "four hundred twenty-one million, twenty thousand, six hundred twelve".