42440164223 has 2 divisors, whose sum is σ = 42440164224. Its totient is φ = 42440164222.

The previous prime is 42440164201. The next prime is 42440164241. The reversal of 42440164223 is 32246104424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42440164223 - 2⁶ = 42440164159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42440164223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42440167223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220082111 + 21220082112.

It is an arithmetic number, because the mean of its divisors is an integer number (21220082112).

Almost surely, 2^42440164223 is an apocalyptic number.

42440164223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440164223 is an equidigital number, since it uses as much as digits as its factorization.

42440164223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 42440164223 its reverse (32246104424), we get a palindrome (74686268647).

The spelling of 42440164223 in words is "forty-two billion, four hundred forty million, one hundred sixty-four thousand, two hundred twenty-three".