423320220404 has 6 divisors (see below), whose sum is σ = 740810385714. Its totient is φ = 211660110200.

The previous prime is 423320220403. The next prime is 423320220451. The reversal of 423320220404 is 404022023324.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 410557999504 + 12762220900 = 640748^2 + 112970^2 .

It is a super-2 number, since 2×423320220404² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423320220403) 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 as a sum of consecutive naturals, namely, 52915027547 + ... + 52915027554.

It is an arithmetic number, because the mean of its divisors is an integer number (123468397619).

Almost surely, 2^423320220404 is an apocalyptic number.

It is an amenable number.

423320220404 is a deficient number, since it is larger than the sum of its proper divisors (317490165310).

423320220404 is a wasteful number, since it uses less digits than its factorization.

423320220404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105830055105 (or 105830055103 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 423320220404 its reverse (404022023324), we get a palindrome (827342243728).

The spelling of 423320220404 in words is "four hundred twenty-three billion, three hundred twenty million, two hundred twenty thousand, four hundred four".