420431444 has 48 divisors (see below), whose sum is σ = 815875200. Its totient is φ = 188850816.

The previous prime is 420431423. The next prime is 420431503. The reversal of 420431444 is 444134024.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 96587 + ... + 100845.

It is an arithmetic number, because the mean of its divisors is an integer number (16997400).

Almost surely, 2^420431444 is an apocalyptic number.

It is an amenable number.

420431444 is a deficient number, since it is larger than the sum of its proper divisors (395443756).

420431444 is a wasteful number, since it uses less digits than its factorization.

420431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352 (or 4350 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 420431444 is about 20504.4249858415. The cubic root of 420431444 is about 749.1435818436.

Adding to 420431444 its reverse (444134024), we get a palindrome (864565468).

The spelling of 420431444 in words is "four hundred twenty million, four hundred thirty-one thousand, four hundred forty-four".