140683321 has 9 divisors (see below), whose sum is σ = 146058861. Its totient is φ = 135500064.

The previous prime is 140683307. The next prime is 140683327. The reversal of 140683321 is 123386041.

The square root of 140683321 is 11861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 33767721 + 106915600 = 5811^2 + 10340^2 .

It is not a de Polignac number, because 140683321 - 2⁵ = 140683289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140683321.

It is not an unprimeable number, because it can be changed into a prime (140683327) 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 8 ways as a sum of consecutive naturals, for example, 343765 + ... + 344173.

Almost surely, 2^140683321 is an apocalyptic number.

140683321 is the 11861-st square number.

140683321 is the 5931-st centered octagonal number.

It is an amenable number.

140683321 is a deficient number, since it is larger than the sum of its proper divisors (5375540).

140683321 is an frugal number, since it uses more digits than its factorization.

140683321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The cubic root of 140683321 is about 520.0928347567.

The spelling of 140683321 in words is "one hundred forty million, six hundred eighty-three thousand, three hundred twenty-one".