140345443 has 4 divisors (see below), whose sum is σ = 160394800. Its totient is φ = 120296088.

The previous prime is 140345423. The next prime is 140345461. The reversal of 140345443 is 344543041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344543041 = 47 ⋅7330703.

It is a cyclic number.

It is not a de Polignac number, because 140345443 - 2⁵ = 140345411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140345423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10024668 + ... + 10024681.

It is an arithmetic number, because the mean of its divisors is an integer number (40098700).

Almost surely, 2^140345443 is an apocalyptic number.

140345443 is a deficient number, since it is larger than the sum of its proper divisors (20049357).

140345443 is an equidigital number, since it uses as much as digits as its factorization.

140345443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20049356.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 140345443 is about 11846.7482036211. The cubic root of 140345443 is about 519.6761333903.

Adding to 140345443 its reverse (344543041), we get a palindrome (484888484).

The spelling of 140345443 in words is "one hundred forty million, three hundred forty-five thousand, four hundred forty-three".