442421222129 has 2 divisors, whose sum is σ = 442421222130. Its totient is φ = 442421222128.

The previous prime is 442421222071. The next prime is 442421222189. The reversal of 442421222129 is 921222124244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416612157025 + 25809065104 = 645455^2 + 160652^2 .

It is a cyclic number.

It is not a de Polignac number, because 442421222129 - 2²⁰ = 442420173553 is a prime.

It is not a weakly prime, because it can be changed into another prime (442421222189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221210611064 + 221210611065.

It is an arithmetic number, because the mean of its divisors is an integer number (221210611065).

Almost surely, 2^442421222129 is an apocalyptic number.

It is an amenable number.

442421222129 is a deficient number, since it is larger than the sum of its proper divisors (1).

442421222129 is an equidigital number, since it uses as much as digits as its factorization.

442421222129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The spelling of 442421222129 in words is "four hundred forty-two billion, four hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-nine".