135421432 has 16 divisors (see below), whose sum is σ = 254066400. Its totient is φ = 67670400.

The previous prime is 135421411. The next prime is 135421441. The reversal of 135421432 is 234124531.

It is a junction number, because it is equal to n+sod(n) for n = 135421397 and 135421406.

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 3 ways as a sum of consecutive naturals, for example, 13057 + ... + 21007.

It is an arithmetic number, because the mean of its divisors is an integer number (15879150).

Almost surely, 2^135421432 is an apocalyptic number.

It is an amenable number.

135421432 is a deficient number, since it is larger than the sum of its proper divisors (118644968).

135421432 is a wasteful number, since it uses less digits than its factorization.

135421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086 (or 10082 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 135421432 is about 11637.0714529043. The cubic root of 135421432 is about 513.5260358578.

Adding to 135421432 its reverse (234124531), we get a palindrome (369545963).

The spelling of 135421432 in words is "one hundred thirty-five million, four hundred twenty-one thousand, four hundred thirty-two".