442522433 has 2 divisors, whose sum is σ = 442522434. Its totient is φ = 442522432.

The previous prime is 442522429. The next prime is 442522447. The reversal of 442522433 is 334225244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229128769 + 213393664 = 15137^2 + 14608^2 .

It is a cyclic number.

It is not a de Polignac number, because 442522433 - 2² = 442522429 is a prime.

It is a super-2 number, since 2×442522433² = 391652207416478978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442522396 and 442522405.

It is not a weakly prime, because it can be changed into another prime (442522403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221261216 + 221261217.

It is an arithmetic number, because the mean of its divisors is an integer number (221261217).

Almost surely, 2^442522433 is an apocalyptic number.

It is an amenable number.

442522433 is a deficient number, since it is larger than the sum of its proper divisors (1).

442522433 is an equidigital number, since it uses as much as digits as its factorization.

442522433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 29.

The square root of 442522433 is about 21036.2171741975. The cubic root of 442522433 is about 762.0411618403.

Adding to 442522433 its reverse (334225244), we get a palindrome (776747677).

The spelling of 442522433 in words is "four hundred forty-two million, five hundred twenty-two thousand, four hundred thirty-three".