140521443 has 16 divisors (see below), whose sum is σ = 194718720. Its totient is φ = 90032544.

The previous prime is 140521441. The next prime is 140521471. The reversal of 140521443 is 344125041.

It is not a de Polignac number, because 140521443 - 2¹ = 140521441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140521441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15780 + ... + 23022.

It is an arithmetic number, because the mean of its divisors is an integer number (12169920).

Almost surely, 2^140521443 is an apocalyptic number.

140521443 is a deficient number, since it is larger than the sum of its proper divisors (54197277).

140521443 is a wasteful number, since it uses less digits than its factorization.

140521443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 140521443 is about 11854.1740749830. The cubic root of 140521443 is about 519.8932756813.

Adding to 140521443 its reverse (344125041), we get a palindrome (484646484).

The spelling of 140521443 in words is "one hundred forty million, five hundred twenty-one thousand, four hundred forty-three".