12143975424 has 176 divisors, whose sum is σ = 37994416128. Its totient is φ = 3375710208.

The previous prime is 12143975411. The next prime is 12143975453. The reversal of 12143975424 is 42457934121.

It is a super-2 number, since 2×12143975424² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 788017 + ... + 803279.

Almost surely, 2^12143975424 is an apocalyptic number.

12143975424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143975424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18997208064).

12143975424 is an abundant number, since it is smaller than the sum of its proper divisors (25850440704).

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

12143975424 is a wasteful number, since it uses less digits than its factorization.

12143975424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330 (or 15312 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 12143975424 in words is "twelve billion, one hundred forty-three million, nine hundred seventy-five thousand, four hundred twenty-four".