123800124 has 48 divisors (see below), whose sum is σ = 347513600. Its totient is φ = 33509376.

The previous prime is 123800111. The next prime is 123800141. The reversal of 123800124 is 421008321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 123800124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37189 + ... + 40380.

Almost surely, 2^123800124 is an apocalyptic number.

123800124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123800124 is an abundant number, since it is smaller than the sum of its proper divisors (223713476).

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

123800124 is a wasteful number, since it uses less digits than its factorization.

123800124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77602 (or 77600 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 123800124 is about 11126.5504088194. The cubic root of 123800124 is about 498.3950189173.

Adding to 123800124 its reverse (421008321), we get a palindrome (544808445).

The spelling of 123800124 in words is "one hundred twenty-three million, eight hundred thousand, one hundred twenty-four".