140243312444421 has 32 divisors (see below), whose sum is σ = 197278813526400. Its totient is φ = 88374130790400.

The previous prime is 140243312444419. The next prime is 140243312444429. The reversal of 140243312444421 is 124444213342041.

It is a happy number.

It is not a de Polignac number, because 140243312444421 - 2¹ = 140243312444419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140243312444421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140243312444429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66556221 + ... + 68631021.

It is an arithmetic number, because the mean of its divisors is an integer number (6164962922700).

Almost surely, 2^{140243312444421} is an apocalyptic number.

It is an amenable number.

140243312444421 is a deficient number, since it is larger than the sum of its proper divisors (57035501081979).

140243312444421 is a wasteful number, since it uses less digits than its factorization.

140243312444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077509.

The product of its (nonzero) digits is 294912, while the sum is 39.

Adding to 140243312444421 its reverse (124444213342041), we get a palindrome (264687525786462).

The spelling of 140243312444421 in words is "one hundred forty trillion, two hundred forty-three billion, three hundred twelve million, four hundred forty-four thousand, four hundred twenty-one".