423322129 has 2 divisors, whose sum is σ = 423322130. Its totient is φ = 423322128.

The previous prime is 423322111. The next prime is 423322157. The reversal of 423322129 is 921223324.

It is an a-pointer prime, because the next prime (423322157) can be obtained adding 423322129 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260887104 + 162435025 = 16152^2 + 12745^2 .

It is a cyclic number.

It is not a de Polignac number, because 423322129 - 2¹³ = 423313937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 423322097 and 423322106.

It is not a weakly prime, because it can be changed into another prime (423323129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211661064 + 211661065.

It is an arithmetic number, because the mean of its divisors is an integer number (211661065).

Almost surely, 2^423322129 is an apocalyptic number.

It is an amenable number.

423322129 is a deficient number, since it is larger than the sum of its proper divisors (1).

423322129 is an equidigital number, since it uses as much as digits as its factorization.

423322129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

The square root of 423322129 is about 20574.7935348086. The cubic root of 423322129 is about 750.8565792495.

It can be divided in two parts, 4233 and 22129, that added together give a palindrome (26362).

The spelling of 423322129 in words is "four hundred twenty-three million, three hundred twenty-two thousand, one hundred twenty-nine".