442033321 has 2 divisors, whose sum is σ = 442033322. Its totient is φ = 442033320.

The previous prime is 442033289. The next prime is 442033351. The reversal of 442033321 is 123330244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439489296 + 2544025 = 20964^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 442033321 - 2⁵ = 442033289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442033292 and 442033301.

It is not a weakly prime, because it can be changed into another prime (442033351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221016660 + 221016661.

It is an arithmetic number, because the mean of its divisors is an integer number (221016661).

Almost surely, 2^442033321 is an apocalyptic number.

It is an amenable number.

442033321 is a deficient number, since it is larger than the sum of its proper divisors (1).

442033321 is an equidigital number, since it uses as much as digits as its factorization.

442033321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 442033321 is about 21024.5884858658. The cubic root of 442033321 is about 761.7603015909.

Adding to 442033321 its reverse (123330244), we get a palindrome (565363565).

It can be divided in two parts, 44203 and 3321, that added together give a square (47524 = 218²).

The spelling of 442033321 in words is "four hundred forty-two million, thirty-three thousand, three hundred twenty-one".