420810872 has 8 divisors (see below), whose sum is σ = 789020400. Its totient is φ = 210405432.

The previous prime is 420810827. The next prime is 420810883. The reversal of 420810872 is 278018024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26300672 + ... + 26300687.

It is an arithmetic number, because the mean of its divisors is an integer number (98627550).

Almost surely, 2^420810872 is an apocalyptic number.

It is an amenable number.

420810872 is a deficient number, since it is larger than the sum of its proper divisors (368209528).

420810872 is a wasteful number, since it uses less digits than its factorization.

420810872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52601365 (or 52601361 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 420810872 is about 20513.6752436027. The cubic root of 420810872 is about 749.3688746864.

Adding to 420810872 its reverse (278018024), we get a palindrome (698828896).

The spelling of 420810872 in words is "four hundred twenty million, eight hundred ten thousand, eight hundred seventy-two".