140443321 has 2 divisors, whose sum is σ = 140443322. Its totient is φ = 140443320.

The previous prime is 140443301. The next prime is 140443343. The reversal of 140443321 is 123344041.

It is an a-pointer prime, because the next prime (140443343) can be obtained adding 140443321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 55711296 = 9205^2 + 7464^2 .

It is a cyclic number.

It is not a de Polignac number, because 140443321 - 2¹⁵ = 140410553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140443292 and 140443301.

It is not a weakly prime, because it can be changed into another prime (140443301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221660 + 70221661.

It is an arithmetic number, because the mean of its divisors is an integer number (70221661).

Almost surely, 2^140443321 is an apocalyptic number.

It is an amenable number.

140443321 is a deficient number, since it is larger than the sum of its proper divisors (1).

140443321 is an equidigital number, since it uses as much as digits as its factorization.

140443321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140443321 is about 11850.8784906436. The cubic root of 140443321 is about 519.7969140383.

Adding to 140443321 its reverse (123344041), we get a palindrome (263787362).

The spelling of 140443321 in words is "one hundred forty million, four hundred forty-three thousand, three hundred twenty-one".