442024000021 has 2 divisors, whose sum is σ = 442024000022. Its totient is φ = 442024000020.

The previous prime is 442023999997. The next prime is 442024000031. The reversal of 442024000021 is 120000420244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270701684100 + 171322315921 = 520290^2 + 413911^2 .

It is a cyclic number.

It is not a de Polignac number, because 442024000021 - 2¹¹ = 442023997973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442024000031) 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, 221012000010 + 221012000011.

It is an arithmetic number, because the mean of its divisors is an integer number (221012000011).

Almost surely, 2^442024000021 is an apocalyptic number.

It is an amenable number.

442024000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

442024000021 is an equidigital number, since it uses as much as digits as its factorization.

442024000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 442024000021 its reverse (120000420244), we get a palindrome (562024420265).

The spelling of 442024000021 in words is "four hundred forty-two billion, twenty-four million, twenty-one", and thus it is an aban number.