264404123 has 4 divisors (see below), whose sum is σ = 264752328. Its totient is φ = 264055920.

The previous prime is 264404083. The next prime is 264404191. The reversal of 264404123 is 321404462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321404462 = 2 ⋅160702231.

It is a cyclic number.

It is not a de Polignac number, because 264404123 - 2⁶ = 264404059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264404092 and 264404101.

It is not an unprimeable number, because it can be changed into a prime (264406123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172961 + ... + 174482.

It is an arithmetic number, because the mean of its divisors is an integer number (66188082).

Almost surely, 2^264404123 is an apocalyptic number.

264404123 is a deficient number, since it is larger than the sum of its proper divisors (348205).

264404123 is an equidigital number, since it uses as much as digits as its factorization.

264404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348204.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 264404123 is about 16260.5080793928. The cubic root of 264404123 is about 641.8340320457.

Adding to 264404123 its reverse (321404462), we get a palindrome (585808585).

The spelling of 264404123 in words is "two hundred sixty-four million, four hundred four thousand, one hundred twenty-three".