423040433 has 2 divisors, whose sum is σ = 423040434. Its totient is φ = 423040432.

The previous prime is 423040411. The next prime is 423040447. The reversal of 423040433 is 334040324.

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., 217031824 + 206008609 = 14732^2 + 14353^2 .

It is a cyclic number.

It is not a de Polignac number, because 423040433 - 2¹⁸ = 422778289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423040399 and 423040408.

It is not a weakly prime, because it can be changed into another prime (423040463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211520216 + 211520217.

It is an arithmetic number, because the mean of its divisors is an integer number (211520217).

Almost surely, 2^423040433 is an apocalyptic number.

It is an amenable number.

423040433 is a deficient number, since it is larger than the sum of its proper divisors (1).

423040433 is an equidigital number, since it uses as much as digits as its factorization.

423040433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 423040433 is about 20567.9467375818. The cubic root of 423040433 is about 750.6899919830.

Adding to 423040433 its reverse (334040324), we get a palindrome (757080757).

The spelling of 423040433 in words is "four hundred twenty-three million, forty thousand, four hundred thirty-three".