442020404453 has 2 divisors, whose sum is σ = 442020404454. Its totient is φ = 442020404452.

The previous prime is 442020404417. The next prime is 442020404509. The reversal of 442020404453 is 354404020244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438140734084 + 3879670369 = 661922^2 + 62287^2 .

It is a cyclic number.

It is not a de Polignac number, because 442020404453 - 2⁶ = 442020404389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442020404053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221010202226 + 221010202227.

It is an arithmetic number, because the mean of its divisors is an integer number (221010202227).

Almost surely, 2^442020404453 is an apocalyptic number.

It is an amenable number.

442020404453 is a deficient number, since it is larger than the sum of its proper divisors (1).

442020404453 is an equidigital number, since it uses as much as digits as its factorization.

442020404453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 442020404453 its reverse (354404020244), we get a palindrome (796424424697).

The spelling of 442020404453 in words is "four hundred forty-two billion, twenty million, four hundred four thousand, four hundred fifty-three".