434140423 has 2 divisors, whose sum is σ = 434140424. Its totient is φ = 434140422.

The previous prime is 434140391. The next prime is 434140429. The reversal of 434140423 is 324041434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 434140423 - 2⁵ = 434140391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434140429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217070211 + 217070212.

It is an arithmetic number, because the mean of its divisors is an integer number (217070212).

Almost surely, 2^434140423 is an apocalyptic number.

434140423 is a deficient number, since it is larger than the sum of its proper divisors (1).

434140423 is an equidigital number, since it uses as much as digits as its factorization.

434140423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 434140423 is about 20836.0366432774. The cubic root of 434140423 is about 757.1990754659.

Adding to 434140423 its reverse (324041434), we get a palindrome (758181857).

The spelling of 434140423 in words is "four hundred thirty-four million, one hundred forty thousand, four hundred twenty-three".