421431121202444 has 48 divisors (see below), whose sum is σ = 756348738880896. Its totient is φ = 205369930752000.

The previous prime is 421431121202387. The next prime is 421431121202467. The reversal of 421431121202444 is 444202121134124.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82086242 + ... + 87069014.

It is an arithmetic number, because the mean of its divisors is an integer number (15757265393352).

Almost surely, 2^{421431121202444} is an apocalyptic number.

It is an amenable number.

421431121202444 is a deficient number, since it is larger than the sum of its proper divisors (334917617678452).

421431121202444 is a wasteful number, since it uses less digits than its factorization.

421431121202444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984706 (or 4984704 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 421431121202444 its reverse (444202121134124), we get a palindrome (865633242336568).

The spelling of 421431121202444 in words is "four hundred twenty-one trillion, four hundred thirty-one billion, one hundred twenty-one million, two hundred two thousand, four hundred forty-four".