442421345999 has 2 divisors, whose sum is σ = 442421346000. Its totient is φ = 442421345998.

The previous prime is 442421345987. The next prime is 442421346079. The reversal of 442421345999 is 999543124244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442421345999 - 2¹⁶ = 442421280463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442421345909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221210672999 + 221210673000.

It is an arithmetic number, because the mean of its divisors is an integer number (221210673000).

Almost surely, 2^442421345999 is an apocalyptic number.

442421345999 is a deficient number, since it is larger than the sum of its proper divisors (1).

442421345999 is an equidigital number, since it uses as much as digits as its factorization.

442421345999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 56.

The spelling of 442421345999 in words is "four hundred forty-two billion, four hundred twenty-one million, three hundred forty-five thousand, nine hundred ninety-nine".