421100002443 has 32 divisors (see below), whose sum is σ = 604673233920. Its totient is φ = 259697088000.

The previous prime is 421100002417. The next prime is 421100002507. The reversal of 421100002443 is 344200001124.

It is not a de Polignac number, because 421100002443 - 2²² = 421095808139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421100002403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31590846 + ... + 31604172.

It is an arithmetic number, because the mean of its divisors is an integer number (18896038560).

Almost surely, 2^421100002443 is an apocalyptic number.

421100002443 is a deficient number, since it is larger than the sum of its proper divisors (183573231477).

421100002443 is a wasteful number, since it uses less digits than its factorization.

421100002443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23907.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 421100002443 its reverse (344200001124), we get a palindrome (765300003567).

The spelling of 421100002443 in words is "four hundred twenty-one billion, one hundred million, two thousand, four hundred forty-three".