115421432 has 64 divisors (see below), whose sum is σ = 270397440. Its totient is φ = 45043200.

The previous prime is 115421419. The next prime is 115421459. The reversal of 115421432 is 234124511.

It is a junction number, because it is equal to n+sod(n) for n = 115421398 and 115421407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27557 + ... + 31467.

It is an arithmetic number, because the mean of its divisors is an integer number (4224960).

Almost surely, 2^115421432 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 115421432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135198720).

115421432 is an abundant number, since it is smaller than the sum of its proper divisors (154976008).

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

115421432 is a wasteful number, since it uses less digits than its factorization.

115421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972 (or 3968 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 115421432 is about 10743.4366940937. The cubic root of 115421432 is about 486.8877180157.

Adding to 115421432 its reverse (234124511), we get a palindrome (349545943).

The spelling of 115421432 in words is "one hundred fifteen million, four hundred twenty-one thousand, four hundred thirty-two".