12135432 has 16 divisors (see below), whose sum is σ = 30338640. Its totient is φ = 4045136.

The previous prime is 12135413. The next prime is 12135443. The reversal of 12135432 is 23453121.

It is a junction number, because it is equal to n+sod(n) for n = 12135399 and 12135408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252798 + ... + 252845.

It is an arithmetic number, because the mean of its divisors is an integer number (1896165).

Almost surely, 2^12135432 is an apocalyptic number.

12135432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12135432 is an abundant number, since it is smaller than the sum of its proper divisors (18203208).

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

12135432 is a wasteful number, since it uses less digits than its factorization.

12135432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505652 (or 505648 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 12135432 is about 3483.5946951389. The cubic root of 12135432 is about 229.8009115243.

Adding to 12135432 its reverse (23453121), we get a palindrome (35588553).

It can be divided in two parts, 121 and 35432, that added together give a palindrome (35553).

The spelling of 12135432 in words is "twelve million, one hundred thirty-five thousand, four hundred thirty-two".