12115442 has 4 divisors (see below), whose sum is σ = 18173166. Its totient is φ = 6057720.

The previous prime is 12115421. The next prime is 12115463. The reversal of 12115442 is 24451121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24451121 = 953 ⋅25657.

It is an interprime number because it is at equal distance from previous prime (12115421) and next prime (12115463).

It can be written as a sum of positive squares in only one way, i.e., 9296401 + 2819041 = 3049^2 + 1679^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3028859 + ... + 3028862.

Almost surely, 2^12115442 is an apocalyptic number.

12115442 is a deficient number, since it is larger than the sum of its proper divisors (6057724).

12115442 is an equidigital number, since it uses as much as digits as its factorization.

12115442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057723.

The product of its digits is 320, while the sum is 20.

The square root of 12115442 is about 3480.7243499019. The cubic root of 12115442 is about 229.6746628980.

Adding to 12115442 its reverse (24451121), we get a palindrome (36566563).

The spelling of 12115442 in words is "twelve million, one hundred fifteen thousand, four hundred forty-two".