442420333 has 2 divisors, whose sum is σ = 442420334. Its totient is φ = 442420332.

The previous prime is 442420327. The next prime is 442420337. The reversal of 442420333 is 333024244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439866729 + 2553604 = 20973^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 442420333 - 2²¹ = 440323181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442420298 and 442420307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442420337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221210166 + 221210167.

It is an arithmetic number, because the mean of its divisors is an integer number (221210167).

Almost surely, 2^442420333 is an apocalyptic number.

It is an amenable number.

442420333 is a deficient number, since it is larger than the sum of its proper divisors (1).

442420333 is an equidigital number, since it uses as much as digits as its factorization.

442420333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 442420333 is about 21033.7902670917. The cubic root of 442420333 is about 761.9825505840.

Adding to 442420333 its reverse (333024244), we get a palindrome (775444577).

The spelling of 442420333 in words is "four hundred forty-two million, four hundred twenty thousand, three hundred thirty-three".