140443423 has 12 divisors (see below), whose sum is σ = 147639240. Its totient is φ = 133555440.

The previous prime is 140443403. The next prime is 140443441. The reversal of 140443423 is 324344041.

It is a de Polignac number, because none of the positive numbers 2^k-140443423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140443403) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 55461 + ... + 57937.

It is an arithmetic number, because the mean of its divisors is an integer number (12303270).

Almost surely, 2^140443423 is an apocalyptic number.

140443423 is a deficient number, since it is larger than the sum of its proper divisors (7195817).

140443423 is an equidigital number, since it uses as much as digits as its factorization.

140443423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598 (or 2567 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 140443423 is about 11850.8827941213. The cubic root of 140443423 is about 519.7970398762.

Adding to 140443423 its reverse (324344041), we get a palindrome (464787464).

The spelling of 140443423 in words is "one hundred forty million, four hundred forty-three thousand, four hundred twenty-three".