1223455123 has 8 divisors (see below), whose sum is σ = 1392708096. Its totient is φ = 1063873800.

The previous prime is 1223455069. The next prime is 1223455141. The reversal of 1223455123 is 3215543221.

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

It is not a de Polignac number, because 1223455123 - 2²⁹ = 686584211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223455091 and 1223455100.

It is not an unprimeable number, because it can be changed into a prime (1223455423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417643 + ... + 2418148.

It is an arithmetic number, because the mean of its divisors is an integer number (174088512).

Almost surely, 2^1223455123 is an apocalyptic number.

1223455123 is a deficient number, since it is larger than the sum of its proper divisors (169252973).

1223455123 is a wasteful number, since it uses less digits than its factorization.

1223455123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835825.

The product of its digits is 7200, while the sum is 28.

The square root of 1223455123 is about 34977.9233660319. The cubic root of 1223455123 is about 1069.5374956902.

Adding to 1223455123 its reverse (3215543221), we get a palindrome (4438998344).

The spelling of 1223455123 in words is "one billion, two hundred twenty-three million, four hundred fifty-five thousand, one hundred twenty-three".