123222405 has 8 divisors (see below), whose sum is σ = 197155872. Its totient is φ = 65718608.

The previous prime is 123222373. The next prime is 123222433. The reversal of 123222405 is 504222321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123222405 - 2⁵ = 123222373 is a prime.

It is a super-2 number, since 2×123222405² = 30367522187968050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4107399 + ... + 4107428.

It is an arithmetic number, because the mean of its divisors is an integer number (24644484).

Almost surely, 2^123222405 is an apocalyptic number.

123222405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123222405 is a deficient number, since it is larger than the sum of its proper divisors (73933467).

123222405 is an equidigital number, since it uses as much as digits as its factorization.

123222405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8214835.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 123222405 is about 11100.5587697197. The cubic root of 123222405 is about 497.6185487209.

Adding to 123222405 its reverse (504222321), we get a palindrome (627444726).

The spelling of 123222405 in words is "one hundred twenty-three million, two hundred twenty-two thousand, four hundred five".