442020400207 has 2 divisors, whose sum is σ = 442020400208. Its totient is φ = 442020400206.

The previous prime is 442020400193. The next prime is 442020400303. The reversal of 442020400207 is 702004020244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442020400207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442020400807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221010200103 + 221010200104.

It is an arithmetic number, because the mean of its divisors is an integer number (221010200104).

Almost surely, 2^442020400207 is an apocalyptic number.

442020400207 is a deficient number, since it is larger than the sum of its proper divisors (1).

442020400207 is an equidigital number, since it uses as much as digits as its factorization.

442020400207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 25.

The spelling of 442020400207 in words is "four hundred forty-two billion, twenty million, four hundred thousand, two hundred seven".