434233021 has 2 divisors, whose sum is σ = 434233022. Its totient is φ = 434233020.

The previous prime is 434232983. The next prime is 434233039. The reversal of 434233021 is 120332434.

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., 378730521 + 55502500 = 19461^2 + 7450^2 .

It is a cyclic number.

It is not a de Polignac number, because 434233021 - 2⁹ = 434232509 is a prime.

It is equal to p_23060740 and since 434233021 and 23060740 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 434232983 and 434233001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434233061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217116510 + 217116511.

It is an arithmetic number, because the mean of its divisors is an integer number (217116511).

Almost surely, 2^434233021 is an apocalyptic number.

It is an amenable number.

434233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

434233021 is an equidigital number, since it uses as much as digits as its factorization.

434233021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 434233021 is about 20838.2585884714. The cubic root of 434233021 is about 757.2529060792.

Adding to 434233021 its reverse (120332434), we get a palindrome (554565455).

The spelling of 434233021 in words is "four hundred thirty-four million, two hundred thirty-three thousand, twenty-one".