123200144 has 20 divisors (see below), whose sum is σ = 249079296. Its totient is φ = 58921632.

The previous prime is 123200131. The next prime is 123200179. The reversal of 123200144 is 441002321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167024 + ... + 167759.

Almost surely, 2^123200144 is an apocalyptic number.

It is an amenable number.

123200144 is an abundant number, since it is smaller than the sum of its proper divisors (125879152).

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

123200144 is a wasteful number, since it uses less digits than its factorization.

123200144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334814 (or 334808 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123200144 is about 11099.5560271571. The cubic root of 123200144 is about 497.5885808113.

Adding to 123200144 its reverse (441002321), we get a palindrome (564202465).

The spelling of 123200144 in words is "one hundred twenty-three million, two hundred thousand, one hundred forty-four".