140444243421 has 8 divisors (see below), whose sum is σ = 187725972864. Its totient is φ = 93396004800.

The previous prime is 140444243417. The next prime is 140444243447. The reversal of 140444243421 is 124342444041.

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

It is not a de Polignac number, because 140444243421 - 2² = 140444243417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140444243321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58371301 + ... + 58373706.

It is an arithmetic number, because the mean of its divisors is an integer number (23465746608).

Almost surely, 2^140444243421 is an apocalyptic number.

It is an amenable number.

140444243421 is a deficient number, since it is larger than the sum of its proper divisors (47281729443).

140444243421 is a wasteful number, since it uses less digits than its factorization.

140444243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116745411.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 140444243421 its reverse (124342444041), we get a palindrome (264786687462).

The spelling of 140444243421 in words is "one hundred forty billion, four hundred forty-four million, two hundred forty-three thousand, four hundred twenty-one".