12400004124 has 48 divisors (see below), whose sum is σ = 33840172800. Its totient is φ = 3915790128.

The previous prime is 12400004117. The next prime is 12400004129. The reversal of 12400004124 is 42140000421.

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 = 12400004097 and 12400004106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400004129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3019392 + ... + 3023495.

It is an arithmetic number, because the mean of its divisors is an integer number (705003600).

Almost surely, 2^12400004124 is an apocalyptic number.

It is an amenable number.

12400004124 is an abundant number, since it is smaller than the sum of its proper divisors (21440168676).

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

12400004124 is a wasteful number, since it uses less digits than its factorization.

12400004124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6042919 (or 6042911 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12400004124 its reverse (42140000421), we get a palindrome (54540004545).

The spelling of 12400004124 in words is "twelve billion, four hundred million, four thousand, one hundred twenty-four".