421123233440344 has 128 divisors (see below), whose sum is σ = 809999401559040. Its totient is φ = 205203255409152.

The previous prime is 421123233440311. The next prime is 421123233440347. The reversal of 421123233440344 is 443044332321124.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 421123233440297 and 421123233440306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421123233440347) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 53625773922 + ... + 53625781774.

It is an arithmetic number, because the mean of its divisors is an integer number (6328120324680).

Almost surely, 2^{421123233440344} is an apocalyptic number.

It is an amenable number.

421123233440344 is a deficient number, since it is larger than the sum of its proper divisors (388876168118696).

421123233440344 is a wasteful number, since it uses less digits than its factorization.

421123233440344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10769 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 40.

Adding to 421123233440344 its reverse (443044332321124), we get a palindrome (864167565761468).

The spelling of 421123233440344 in words is "four hundred twenty-one trillion, one hundred twenty-three billion, two hundred thirty-three million, four hundred forty thousand, three hundred forty-four".