140221443 has 4 divisors (see below), whose sum is σ = 186961928. Its totient is φ = 93480960.

The previous prime is 140221441. The next prime is 140221447. The reversal of 140221443 is 344122041.

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

It is not a de Polignac number, because 140221443 - 2¹ = 140221441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140221441) 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, 23370238 + ... + 23370243.

It is an arithmetic number, because the mean of its divisors is an integer number (46740482).

Almost surely, 2^140221443 is an apocalyptic number.

140221443 is a deficient number, since it is larger than the sum of its proper divisors (46740485).

140221443 is an equidigital number, since it uses as much as digits as its factorization.

140221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46740484.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140221443 is about 11841.5135434623. The cubic root of 140221443 is about 519.5230377459.

Adding to 140221443 its reverse (344122041), we get a palindrome (484343484).

The spelling of 140221443 in words is "one hundred forty million, two hundred twenty-one thousand, four hundred forty-three".