12800124 has 18 divisors (see below), whose sum is σ = 32355960. Its totient is φ = 4266696.

The previous prime is 12800087. The next prime is 12800131. The reversal of 12800124 is 42100821.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12800097 and 12800106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177744 + ... + 177815.

Almost surely, 2^12800124 is an apocalyptic number.

It is an amenable number.

12800124 is an abundant number, since it is smaller than the sum of its proper divisors (19555836).

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

12800124 is a wasteful number, since it uses less digits than its factorization.

12800124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355569 (or 355564 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12800124 is about 3577.7260934845. The cubic root of 12800124 is about 233.9221744258.

Adding to 12800124 its reverse (42100821), we get a palindrome (54900945).

The spelling of 12800124 in words is "twelve million, eight hundred thousand, one hundred twenty-four".