4021323041023 has 4 divisors (see below), whose sum is σ = 4021340273280. Its totient is φ = 4021305808768.

The previous prime is 4021323041003. The next prime is 4021323041039. The reversal of 4021323041023 is 3201403231204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021323041023 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 (4021323041003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8261215 + ... + 8734432.

It is an arithmetic number, because the mean of its divisors is an integer number (1005335068320).

Almost surely, 2^{4021323041023} is an apocalyptic number.

4021323041023 is a deficient number, since it is larger than the sum of its proper divisors (17232257).

4021323041023 is a wasteful number, since it uses less digits than its factorization.

4021323041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17232256.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 4021323041023 its reverse (3201403231204), we get a palindrome (7222726272227).

The spelling of 4021323041023 in words is "four trillion, twenty-one billion, three hundred twenty-three million, forty-one thousand, twenty-three".