140342243 has 2 divisors, whose sum is σ = 140342244. Its totient is φ = 140342242.

The previous prime is 140342207. The next prime is 140342249. The reversal of 140342243 is 342243041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140342243 - 2¹⁸ = 140080099 is a prime.

It is not a weakly prime, because it can be changed into another prime (140342249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70171121 + 70171122.

It is an arithmetic number, because the mean of its divisors is an integer number (70171122).

Almost surely, 2^140342243 is an apocalyptic number.

140342243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140342243 is an equidigital number, since it uses as much as digits as its factorization.

140342243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 140342243 is about 11846.6131446925. The cubic root of 140342243 is about 519.6721836688.

Adding to 140342243 its reverse (342243041), we get a palindrome (482585284).

The spelling of 140342243 in words is "one hundred forty million, three hundred forty-two thousand, two hundred forty-three".