420422240444 has 24 divisors (see below), whose sum is σ = 777303051840. Its totient is φ = 198644108096.

The previous prime is 420422240401. The next prime is 420422240461. The reversal of 420422240444 is 444042224024.

It is a self number, because there is not a number n which added to its sum of digits gives 420422240444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38551247 + ... + 38562150.

It is an arithmetic number, because the mean of its divisors is an integer number (32387627160).

Almost surely, 2^420422240444 is an apocalyptic number.

It is an amenable number.

420422240444 is a deficient number, since it is larger than the sum of its proper divisors (356880811396).

420422240444 is a wasteful number, since it uses less digits than its factorization.

420422240444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77113477 (or 77113475 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 420422240444 its reverse (444042224024), we get a palindrome (864464464468).

The spelling of 420422240444 in words is "four hundred twenty billion, four hundred twenty-two million, two hundred forty thousand, four hundred forty-four".