1143232432 has 80 divisors (see below), whose sum is σ = 2437344000. Its totient is φ = 517370112.

The previous prime is 1143232379. The next prime is 1143232459. The reversal of 1143232432 is 2342323411.

It is a junction number, because it is equal to n+sod(n) for n = 1143232397 and 1143232406.

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, 907419 + ... + 908677.

It is an arithmetic number, because the mean of its divisors is an integer number (30466800).

Almost surely, 2^1143232432 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 1143232432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218672000).

1143232432 is an abundant number, since it is smaller than the sum of its proper divisors (1294111568).

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

1143232432 is a wasteful number, since it uses less digits than its factorization.

1143232432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1412 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 1143232432 is about 33811.7203348188. The cubic root of 1143232432 is about 1045.6303461003.

Adding to 1143232432 its reverse (2342323411), we get a palindrome (3485555843).

The spelling of 1143232432 in words is "one billion, one hundred forty-three million, two hundred thirty-two thousand, four hundred thirty-two".