220420443 has 4 divisors (see below), whose sum is σ = 293893928. Its totient is φ = 146946960.

The previous prime is 220420441. The next prime is 220420471. The reversal of 220420443 is 344024022.

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

It is not a de Polignac number, because 220420443 - 2¹ = 220420441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220420441) 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, 36736738 + ... + 36736743.

It is an arithmetic number, because the mean of its divisors is an integer number (73473482).

Almost surely, 2^220420443 is an apocalyptic number.

220420443 is a deficient number, since it is larger than the sum of its proper divisors (73473485).

220420443 is an equidigital number, since it uses as much as digits as its factorization.

220420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73473484.

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

The square root of 220420443 is about 14846.5633397093. The cubic root of 220420443 is about 604.0653948390.

Adding to 220420443 its reverse (344024022), we get a palindrome (564444465).

The spelling of 220420443 in words is "two hundred twenty million, four hundred twenty thousand, four hundred forty-three".