421404102423344 has 40 divisors (see below), whose sum is σ = 822655018375680. Its totient is φ = 209107178538048.

The previous prime is 421404102423281. The next prime is 421404102423349. The reversal of 421404102423344 is 443324201404124.

It is a super-2 number, since 2×421404102423344² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421404102423298 and 421404102423307.

It is not an unprimeable number, because it can be changed into a prime (421404102423349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29904584 + ... + 41678439.

It is an arithmetic number, because the mean of its divisors is an integer number (20566375459392).

Almost surely, 2^{421404102423344} is an apocalyptic number.

It is an amenable number.

421404102423344 is a deficient number, since it is larger than the sum of its proper divisors (401250915952336).

421404102423344 is a wasteful number, since it uses less digits than its factorization.

421404102423344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71585817 (or 71585811 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 421404102423344 its reverse (443324201404124), we get a palindrome (864728303827468).

The spelling of 421404102423344 in words is "four hundred twenty-one trillion, four hundred four billion, one hundred two million, four hundred twenty-three thousand, three hundred forty-four".