4423021512423 has 32 divisors (see below), whose sum is σ = 6434890041600. Its totient is φ = 2691666432000.

The previous prime is 4423021512407. The next prime is 4423021512431. The reversal of 4423021512423 is 3242151203244.

It is a happy number.

It is not a de Polignac number, because 4423021512423 - 2⁴ = 4423021512407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423021512223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1913178 + ... + 3536423.

It is an arithmetic number, because the mean of its divisors is an integer number (201090313800).

Almost surely, 2^{4423021512423} is an apocalyptic number.

4423021512423 is a deficient number, since it is larger than the sum of its proper divisors (2011868529177).

4423021512423 is a wasteful number, since it uses less digits than its factorization.

4423021512423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450143.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 4423021512423 its reverse (3242151203244), we get a palindrome (7665172715667).

The spelling of 4423021512423 in words is "four trillion, four hundred twenty-three billion, twenty-one million, five hundred twelve thousand, four hundred twenty-three".