421444434005 has 16 divisors (see below), whose sum is σ = 577992449280. Its totient is φ = 288984713472.

The previous prime is 421444433929. The next prime is 421444434013. The reversal of 421444434005 is 500434444124.

It is not a de Polignac number, because 421444434005 - 2¹² = 421444429909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420792 + ... + 2589038.

It is an arithmetic number, because the mean of its divisors is an integer number (36124528080).

Almost surely, 2^421444434005 is an apocalyptic number.

It is an amenable number.

421444434005 is a deficient number, since it is larger than the sum of its proper divisors (156548015275).

421444434005 is a wasteful number, since it uses less digits than its factorization.

421444434005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239828.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 421444434005 its reverse (500434444124), we get a palindrome (921878878129).

The spelling of 421444434005 in words is "four hundred twenty-one billion, four hundred forty-four million, four hundred thirty-four thousand, five".