442420423933 has 2 divisors, whose sum is σ = 442420423934. Its totient is φ = 442420423932.

The previous prime is 442420423931. The next prime is 442420424027. The reversal of 442420423933 is 339324024244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401400807844 + 41019616089 = 633562^2 + 202533^2 .

It is a cyclic number.

It is not a de Polignac number, because 442420423933 - 2¹ = 442420423931 is a prime.

Together with 442420423931, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442420423931) 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, 221210211966 + 221210211967.

It is an arithmetic number, because the mean of its divisors is an integer number (221210211967).

Almost surely, 2^442420423933 is an apocalyptic number.

It is an amenable number.

442420423933 is a deficient number, since it is larger than the sum of its proper divisors (1).

442420423933 is an equidigital number, since it uses as much as digits as its factorization.

442420423933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 40.

The spelling of 442420423933 in words is "four hundred forty-two billion, four hundred twenty million, four hundred twenty-three thousand, nine hundred thirty-three".