123200000123 has 4 divisors (see below), whose sum is σ = 123369464400. Its totient is φ = 123030535848.

The previous prime is 123200000069. The next prime is 123200000141. The reversal of 123200000123 is 321000002321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123200000123 - 2¹² = 123199996027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123200000098 and 123200000107.

It is not an unprimeable number, because it can be changed into a prime (123200000323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84731048 + ... + 84732501.

It is an arithmetic number, because the mean of its divisors is an integer number (30842366100).

Almost surely, 2^123200000123 is an apocalyptic number.

123200000123 is a deficient number, since it is larger than the sum of its proper divisors (169464277).

123200000123 is an equidigital number, since it uses as much as digits as its factorization.

123200000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169464276.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 123200000123 its reverse (321000002321), we get a palindrome (444200002444).

The spelling of 123200000123 in words is "one hundred twenty-three billion, two hundred million, one hundred twenty-three", and thus it is an aban number.