534442021 has 2 divisors, whose sum is σ = 534442022. Its totient is φ = 534442020.

The previous prime is 534442003. The next prime is 534442033. The reversal of 534442021 is 120244435.

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., 532224900 + 2217121 = 23070^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 534442021 - 2⁵ = 534441989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (534442121) 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, 267221010 + 267221011.

It is an arithmetic number, because the mean of its divisors is an integer number (267221011).

Almost surely, 2^534442021 is an apocalyptic number.

It is an amenable number.

534442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

534442021 is an equidigital number, since it uses as much as digits as its factorization.

534442021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 534442021 is about 23118.0020979323. The cubic root of 534442021 is about 811.5218156698.

Adding to 534442021 its reverse (120244435), we get a palindrome (654686456).

The spelling of 534442021 in words is "five hundred thirty-four million, four hundred forty-two thousand, twenty-one".