12440023142 has 8 divisors (see below), whose sum is σ = 18673550832. Its totient is φ = 6215506200.

The previous prime is 12440023097. The next prime is 12440023153. The reversal of 12440023142 is 24132004421.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249234 + ... + 2254757.

It is an arithmetic number, because the mean of its divisors is an integer number (2334193854).

Almost surely, 2^12440023142 is an apocalyptic number.

12440023142 is a deficient number, since it is larger than the sum of its proper divisors (6233527690).

12440023142 is a wasteful number, since it uses less digits than its factorization.

12440023142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505374.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12440023142 its reverse (24132004421), we get a palindrome (36572027563).

The spelling of 12440023142 in words is "twelve billion, four hundred forty million, twenty-three thousand, one hundred forty-two".