12432791 has 4 divisors (see below), whose sum is σ = 14208912. Its totient is φ = 10656672.

The previous prime is 12432779. The next prime is 12432809. The reversal of 12432791 is 19723421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12432791 - 2¹⁰ = 12431767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888050 + ... + 888063.

It is an arithmetic number, because the mean of its divisors is an integer number (3552228).

Almost surely, 2^12432791 is an apocalyptic number.

12432791 is a deficient number, since it is larger than the sum of its proper divisors (1776121).

12432791 is an equidigital number, since it uses as much as digits as its factorization.

12432791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776120.

The product of its digits is 3024, while the sum is 29.

The square root of 12432791 is about 3526.0163073928. The cubic root of 12432791 is about 231.6627519193.

The spelling of 12432791 in words is "twelve million, four hundred thirty-two thousand, seven hundred ninety-one".