1243232432 has 160 divisors (see below), whose sum is σ = 2855817216. Its totient is φ = 519552000.

The previous prime is 1243232411. The next prime is 1243232443. The reversal of 1243232432 is 2342323421.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 12309182 + ... + 12309282.

Almost surely, 2^1243232432 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 1243232432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427908608).

1243232432 is an abundant number, since it is smaller than the sum of its proper divisors (1612584784).

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

1243232432 is a wasteful number, since it uses less digits than its factorization.

1243232432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 1243232432 is about 35259.5013010678. The cubic root of 1243232432 is about 1075.2697882809.

Adding to 1243232432 its reverse (2342323421), we get a palindrome (3585555853).

The spelling of 1243232432 in words is "one billion, two hundred forty-three million, two hundred thirty-two thousand, four hundred thirty-two".