220020402423 has 8 divisors (see below), whose sum is σ = 298169725936. Its totient is φ = 144275673600.

The previous prime is 220020402403. The next prime is 220020402449. The reversal of 220020402423 is 324204020022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220020402423 - 2²⁰ = 220019353847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220020402423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020402403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601148458 + ... + 601148823.

It is an arithmetic number, because the mean of its divisors is an integer number (37271215742).

Almost surely, 2^220020402423 is an apocalyptic number.

220020402423 is a deficient number, since it is larger than the sum of its proper divisors (78149323513).

220020402423 is a wasteful number, since it uses less digits than its factorization.

220020402423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202297345.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 220020402423 its reverse (324204020022), we get a palindrome (544224422445).

The spelling of 220020402423 in words is "two hundred twenty billion, twenty million, four hundred two thousand, four hundred twenty-three".