421112021432 has 64 divisors (see below), whose sum is σ = 814461648000. Its totient is φ = 204003805824.

The previous prime is 421112021357. The next prime is 421112021461. The reversal of 421112021432 is 234120211124.

It is a junction number, because it is equal to n+sod(n) for n = 421112021398 and 421112021407.

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, 68325983 + ... + 68332145.

It is an arithmetic number, because the mean of its divisors is an integer number (12725963250).

Almost surely, 2^421112021432 is an apocalyptic number.

It is an amenable number.

421112021432 is a deficient number, since it is larger than the sum of its proper divisors (393349626568).

421112021432 is a wasteful number, since it uses less digits than its factorization.

421112021432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 421112021432 its reverse (234120211124), we get a palindrome (655232232556).

The spelling of 421112021432 in words is "four hundred twenty-one billion, one hundred twelve million, twenty-one thousand, four hundred thirty-two".