423535121 has 2 divisors, whose sum is σ = 423535122. Its totient is φ = 423535120.

The previous prime is 423535109. The next prime is 423535129. The reversal of 423535121 is 121535324.

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., 416976400 + 6558721 = 20420^2 + 2561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423535121 is a prime.

It is not a weakly prime, because it can be changed into another prime (423535129) 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, 211767560 + 211767561.

It is an arithmetic number, because the mean of its divisors is an integer number (211767561).

Almost surely, 2^423535121 is an apocalyptic number.

It is an amenable number.

423535121 is a deficient number, since it is larger than the sum of its proper divisors (1).

423535121 is an equidigital number, since it uses as much as digits as its factorization.

423535121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 423535121 is about 20579.9689261184. The cubic root of 423535121 is about 750.9824878024.

It can be divided in two parts, 42353 and 5121, that added together give a palindrome (47474).

The spelling of 423535121 in words is "four hundred twenty-three million, five hundred thirty-five thousand, one hundred twenty-one".