123140244 has 24 divisors (see below), whose sum is σ = 288120448. Its totient is φ = 40933440.

The previous prime is 123140221. The next prime is 123140279. The reversal of 123140244 is 442041321.

It is a self number, because there is not a number n which added to its sum of digits gives 123140244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9577 + ... + 18384.

Almost surely, 2^123140244 is an apocalyptic number.

It is an amenable number.

123140244 is an abundant number, since it is smaller than the sum of its proper divisors (164980204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123140244 is a wasteful number, since it uses less digits than its factorization.

123140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28335 (or 28333 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 123140244 is about 11096.8573929739. The cubic root of 123140244 is about 497.5079250945.

Adding to 123140244 its reverse (442041321), we get a palindrome (565181565).

The spelling of 123140244 in words is "one hundred twenty-three million, one hundred forty thousand, two hundred forty-four".