433042021 has 2 divisors, whose sum is σ = 433042022. Its totient is φ = 433042020.

The previous prime is 433041979. The next prime is 433042033. The reversal of 433042021 is 120240334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283248900 + 149793121 = 16830^2 + 12239^2 .

It is a cyclic number.

It is not a de Polignac number, because 433042021 - 2⁷ = 433041893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 433042021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (433042061) 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, 216521010 + 216521011.

It is an arithmetic number, because the mean of its divisors is an integer number (216521011).

Almost surely, 2^433042021 is an apocalyptic number.

It is an amenable number.

433042021 is a deficient number, since it is larger than the sum of its proper divisors (1).

433042021 is an equidigital number, since it uses as much as digits as its factorization.

433042021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 433042021 is about 20809.6617223827. The cubic root of 433042021 is about 756.5599493926.

Adding to 433042021 its reverse (120240334), we get a palindrome (553282355).

The spelling of 433042021 in words is "four hundred thirty-three million, forty-two thousand, twenty-one".