434024021 has 2 divisors, whose sum is σ = 434024022. Its totient is φ = 434024020.

The previous prime is 434024009. The next prime is 434024029. The reversal of 434024021 is 120420434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433680625 + 343396 = 20825^2 + 586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434024021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 434023984 and 434024002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434024029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217012010 + 217012011.

It is an arithmetic number, because the mean of its divisors is an integer number (217012011).

Almost surely, 2^434024021 is an apocalyptic number.

It is an amenable number.

434024021 is a deficient number, since it is larger than the sum of its proper divisors (1).

434024021 is an equidigital number, since it uses as much as digits as its factorization.

434024021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 434024021 is about 20833.2431704716. The cubic root of 434024021 is about 757.1313958546.

Adding to 434024021 its reverse (120420434), we get a palindrome (554444455).

The spelling of 434024021 in words is "four hundred thirty-four million, twenty-four thousand, twenty-one".