123226401 has 4 divisors (see below), whose sum is σ = 164301872. Its totient is φ = 82150932.

The previous prime is 123226379. The next prime is 123226403. The reversal of 123226401 is 104622321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123226401 - 2⁷ = 123226273 is a prime.

It is a super-3 number, since 3×123226401³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123226403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20537731 + ... + 20537736.

It is an arithmetic number, because the mean of its divisors is an integer number (41075468).

Almost surely, 2^123226401 is an apocalyptic number.

It is an amenable number.

123226401 is a deficient number, since it is larger than the sum of its proper divisors (41075471).

123226401 is an equidigital number, since it uses as much as digits as its factorization.

123226401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41075470.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123226401 is about 11100.7387591998. The cubic root of 123226401 is about 497.6239277811.

Adding to 123226401 its reverse (104622321), we get a palindrome (227848722).

The spelling of 123226401 in words is "one hundred twenty-three million, two hundred twenty-six thousand, four hundred one".