12436442 has 4 divisors (see below), whose sum is σ = 18654666. Its totient is φ = 6218220.

The previous prime is 12436439. The next prime is 12436453. The reversal of 12436442 is 24463421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24463421 = 23 ⋅1063627.

It can be written as a sum of positive squares in only one way, i.e., 7187761 + 5248681 = 2681^2 + 2291^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3109109 + ... + 3109112.

Almost surely, 2^12436442 is an apocalyptic number.

12436442 is a deficient number, since it is larger than the sum of its proper divisors (6218224).

12436442 is an equidigital number, since it uses as much as digits as its factorization.

12436442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6218223.

The product of its digits is 4608, while the sum is 26.

The square root of 12436442 is about 3526.5339924634. The cubic root of 12436442 is about 231.6854263113.

Adding to 12436442 its reverse (24463421), we get a palindrome (36899863).

The spelling of 12436442 in words is "twelve million, four hundred thirty-six thousand, four hundred forty-two".