442220226405 has 16 divisors (see below), whose sum is σ = 716077091520. Its totient is φ = 233009211008.

The previous prime is 442220226401. The next prime is 442220226463. The reversal of 442220226405 is 504622022244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 442220226405 - 2² = 442220226401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442220226401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177597240 + ... + 177599729.

It is an arithmetic number, because the mean of its divisors is an integer number (44754818220).

Almost surely, 2^442220226405 is an apocalyptic number.

It is an amenable number.

442220226405 is a deficient number, since it is larger than the sum of its proper divisors (273856865115).

442220226405 is a wasteful number, since it uses less digits than its factorization.

442220226405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355197060.

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 442220226405 its reverse (504622022244), we get a palindrome (946842248649).

The spelling of 442220226405 in words is "four hundred forty-two billion, two hundred twenty million, two hundred twenty-six thousand, four hundred five".