140723243 has 2 divisors, whose sum is σ = 140723244. Its totient is φ = 140723242.

The previous prime is 140723227. The next prime is 140723267. The reversal of 140723243 is 342327041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140723243 - 2⁴ = 140723227 is a prime.

It is a super-2 number, since 2×140723243² = 39606062240874098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140723273) 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 as a sum of consecutive naturals, namely, 70361621 + 70361622.

It is an arithmetic number, because the mean of its divisors is an integer number (70361622).

Almost surely, 2^140723243 is an apocalyptic number.

140723243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140723243 is an equidigital number, since it uses as much as digits as its factorization.

140723243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 140723243 is about 11862.6827910047. The cubic root of 140723243 is about 520.1420260475.

The spelling of 140723243 in words is "one hundred forty million, seven hundred twenty-three thousand, two hundred forty-three".