123243243 has 16 divisors (see below), whose sum is σ = 170514720. Its totient is φ = 79084544.

The previous prime is 123243233. The next prime is 123243247. The reversal of 123243243 is 342342321.

It is a cyclic number.

It is not a de Polignac number, because 123243243 - 2⁹ = 123242731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123243247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28705 + ... + 32717.

It is an arithmetic number, because the mean of its divisors is an integer number (10657170).

Almost surely, 2^123243243 is an apocalyptic number.

123243243 is a deficient number, since it is larger than the sum of its proper divisors (47271477).

123243243 is a wasteful number, since it uses less digits than its factorization.

123243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398.

The product of its digits is 3456, while the sum is 24.

The square root of 123243243 is about 11101.4973314414. The cubic root of 123243243 is about 497.6465977077.

Adding to 123243243 its reverse (342342321), we get a palindrome (465585564).

The spelling of 123243243 in words is "one hundred twenty-three million, two hundred forty-three thousand, two hundred forty-three".