421224160243 has 4 divisors (see below), whose sum is σ = 446002052040. Its totient is φ = 396446268448.

The previous prime is 421224160171. The next prime is 421224160261. The reversal of 421224160243 is 342061422124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421224160243 - 2³³ = 412634225651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421224160043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12388945873 + ... + 12388945906.

It is an arithmetic number, because the mean of its divisors is an integer number (111500513010).

Almost surely, 2^421224160243 is an apocalyptic number.

421224160243 is a deficient number, since it is larger than the sum of its proper divisors (24777891797).

421224160243 is a wasteful number, since it uses less digits than its factorization.

421224160243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24777891796.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 421224160243 its reverse (342061422124), we get a palindrome (763285582367).

The spelling of 421224160243 in words is "four hundred twenty-one billion, two hundred twenty-four million, one hundred sixty thousand, two hundred forty-three".