421415020 has 36 divisors (see below), whose sum is σ = 958290480. Its totient is φ = 155598144.

The previous prime is 421415011. The next prime is 421415021. The reversal of 421415020 is 20514124.

It is not an unprimeable number, because it can be changed into a prime (421415021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58960 + ... + 65719.

It is an arithmetic number, because the mean of its divisors is an integer number (26619180).

Almost surely, 2^421415020 is an apocalyptic number.

It is an amenable number.

421415020 is an abundant number, since it is smaller than the sum of its proper divisors (536875460).

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

421415020 is a wasteful number, since it uses less digits than its factorization.

421415020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124714 (or 124699 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 421415020 is about 20528.3954560506. The cubic root of 421415020 is about 749.7273201322.

Adding to 421415020 its reverse (20514124), we get a palindrome (441929144).

The spelling of 421415020 in words is "four hundred twenty-one million, four hundred fifteen thousand, twenty".