4243221200423 has 4 divisors (see below), whose sum is σ = 4315140203880. Its totient is φ = 4171302196968.

The previous prime is 4243221200399. The next prime is 4243221200429. The reversal of 4243221200423 is 3240021223424.

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 4243221200423 - 2⁸ = 4243221200167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243221200429) 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, 35959501640 + ... + 35959501757.

It is an arithmetic number, because the mean of its divisors is an integer number (1078785050970).

Almost surely, 2^{4243221200423} is an apocalyptic number.

4243221200423 is a deficient number, since it is larger than the sum of its proper divisors (71919003457).

4243221200423 is an equidigital number, since it uses as much as digits as its factorization.

4243221200423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71919003456.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 4243221200423 its reverse (3240021223424), we get a palindrome (7483242423847).

The spelling of 4243221200423 in words is "four trillion, two hundred forty-three billion, two hundred twenty-one million, two hundred thousand, four hundred twenty-three".