12440111242 has 8 divisors (see below), whose sum is σ = 20095564356. Its totient is φ = 5741589792.

The previous prime is 12440111239. The next prime is 12440111317. The reversal of 12440111242 is 24211104421.

It can be written as a sum of positive squares in 2 ways, for example, as 10003800361 + 2436310881 = 100019^2 + 49359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 239232883 + ... + 239232934.

Almost surely, 2^12440111242 is an apocalyptic number.

12440111242 is a deficient number, since it is larger than the sum of its proper divisors (7655453114).

12440111242 is a wasteful number, since it uses less digits than its factorization.

12440111242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478465832.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12440111242 its reverse (24211104421), we get a palindrome (36651215663).

The spelling of 12440111242 in words is "twelve billion, four hundred forty million, one hundred eleven thousand, two hundred forty-two".