12143021240 has 48 divisors (see below), whose sum is σ = 31782504600. Its totient is φ = 4163320896.

The previous prime is 12143021227. The next prime is 12143021279. The reversal of 12143021240 is 4212034121.

It is a super-2 number, since 2×12143021240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3095750 + ... + 3099669.

Almost surely, 2^12143021240 is an apocalyptic number.

12143021240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143021240 is an abundant number, since it is smaller than the sum of its proper divisors (19639483360).

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

12143021240 is a wasteful number, since it uses less digits than its factorization.

12143021240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195444 (or 6195433 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12143021240 its reverse (4212034121), we get a palindrome (16355055361).

The spelling of 12143021240 in words is "twelve billion, one hundred forty-three million, twenty-one thousand, two hundred forty".