123120600 has 48 divisors (see below), whose sum is σ = 381675720. Its totient is φ = 32832000.

The previous prime is 123120577. The next prime is 123120601. The reversal of 123120600 is 6021321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123120600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102001 + ... + 103200.

Almost surely, 2^123120600 is an apocalyptic number.

123120600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123120600 is an abundant number, since it is smaller than the sum of its proper divisors (258555120).

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

123120600 is a wasteful number, since it uses less digits than its factorization.

123120600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205220 (or 205211 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123120600 is about 11095.9722422147. The cubic root of 123120600 is about 497.4814686329.

Adding to 123120600 its reverse (6021321), we get a palindrome (129141921).

The spelling of 123120600 in words is "one hundred twenty-three million, one hundred twenty thousand, six hundred".