140243312402243 has 4 divisors (see below), whose sum is σ = 141172076060688. Its totient is φ = 139314548743800.

The previous prime is 140243312402233. The next prime is 140243312402273. The reversal of 140243312402243 is 342204213342041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140243312402243 - 2¹⁰ = 140243312401219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140243312402233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464381828996 + ... + 464381829297.

It is an arithmetic number, because the mean of its divisors is an integer number (35293019015172).

Almost surely, 2^{140243312402243} is an apocalyptic number.

140243312402243 is a deficient number, since it is larger than the sum of its proper divisors (928763658445).

140243312402243 is an equidigital number, since it uses as much as digits as its factorization.

140243312402243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928763658444.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 140243312402243 its reverse (342204213342041), we get a palindrome (482447525744284).

The spelling of 140243312402243 in words is "one hundred forty trillion, two hundred forty-three billion, three hundred twelve million, four hundred two thousand, two hundred forty-three".