420404244 has 24 divisors (see below), whose sum is σ = 1056400800. Its totient is φ = 129355104.

The previous prime is 420404239. The next prime is 420404251. The reversal of 420404244 is 442404024.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1347294 + ... + 1347605.

It is an arithmetic number, because the mean of its divisors is an integer number (44016700).

Almost surely, 2^420404244 is an apocalyptic number.

It is an amenable number.

420404244 is an abundant number, since it is smaller than the sum of its proper divisors (635996556).

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

420404244 is a wasteful number, since it uses less digits than its factorization.

420404244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694919 (or 2694917 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 420404244 is about 20503.7617036484. The cubic root of 420404244 is about 749.1274261023.

Adding to 420404244 its reverse (442404024), we get a palindrome (862808268).

The spelling of 420404244 in words is "four hundred twenty million, four hundred four thousand, two hundred forty-four".