12142243432 has 128 divisors (see below), whose sum is σ = 26170490880. Its totient is φ = 5231520000.

The previous prime is 12142243429. The next prime is 12142243457. The reversal of 12142243432 is 23434224121.

It is a self number, because there is not a number n which added to its sum of digits gives 12142243432.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34991883 + ... + 34992229.

It is an arithmetic number, because the mean of its divisors is an integer number (204456960).

Almost surely, 2^12142243432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12142243432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13085245440).

12142243432 is an abundant number, since it is smaller than the sum of its proper divisors (14028247448).

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

12142243432 is a wasteful number, since it uses less digits than its factorization.

12142243432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 619 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 12142243432 its reverse (23434224121), we get a palindrome (35576467553).

The spelling of 12142243432 in words is "twelve billion, one hundred forty-two million, two hundred forty-three thousand, four hundred thirty-two".