1320420223 has 4 divisors (see below), whose sum is σ = 1332534280. Its totient is φ = 1308306168.

The previous prime is 1320420203. The next prime is 1320420229. The reversal of 1320420223 is 3220240231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220240231 = 13 ⋅247710787.

It is a cyclic number.

It is not a de Polignac number, because 1320420223 - 2¹⁷ = 1320289151 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 1320420223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320420229) 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 3 ways as a sum of consecutive naturals, for example, 6056865 + ... + 6057082.

It is an arithmetic number, because the mean of its divisors is an integer number (333133570).

Almost surely, 2^1320420223 is an apocalyptic number.

1320420223 is a deficient number, since it is larger than the sum of its proper divisors (12114057).

1320420223 is a wasteful number, since it uses less digits than its factorization.

1320420223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12114056.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1320420223 is about 36337.5869176807. The cubic root of 1320420223 is about 1097.0777042908.

Adding to 1320420223 its reverse (3220240231), we get a palindrome (4540660454).

The spelling of 1320420223 in words is "one billion, three hundred twenty million, four hundred twenty thousand, two hundred twenty-three".