12409142 has 12 divisors (see below), whose sum is σ = 19083948. Its totient is φ = 6051600.

The previous prime is 12409141. The next prime is 12409151. The reversal of 12409142 is 24190421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1517 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (1590329).

Almost surely, 2^12409142 is an apocalyptic number.

12409142 is a deficient number, since it is larger than the sum of its proper divisors (6674806).

12409142 is an equidigital number, since it uses as much as digits as its factorization.

12409142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775 (or 3734 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12409142 is about 3522.6612099377. The cubic root of 12409142 is about 231.5157731277.

Adding to 12409142 its reverse (24190421), we get a palindrome (36599563).

The spelling of 12409142 in words is "twelve million, four hundred nine thousand, one hundred forty-two".