140606243 has 2 divisors, whose sum is σ = 140606244. Its totient is φ = 140606242.

The previous prime is 140606237. The next prime is 140606273. The reversal of 140606243 is 342606041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140606243 - 2¹⁰ = 140605219 is a prime.

It is not a weakly prime, because it can be changed into another prime (140606273) 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 as a sum of consecutive naturals, namely, 70303121 + 70303122.

It is an arithmetic number, because the mean of its divisors is an integer number (70303122).

Almost surely, 2^140606243 is an apocalyptic number.

140606243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140606243 is an equidigital number, since it uses as much as digits as its factorization.

140606243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 140606243 is about 11857.7503346967. The cubic root of 140606243 is about 519.9978340640.

The spelling of 140606243 in words is "one hundred forty million, six hundred six thousand, two hundred forty-three".