140302243 has 2 divisors, whose sum is σ = 140302244. Its totient is φ = 140302242.

The previous prime is 140302229. The next prime is 140302259. The reversal of 140302243 is 342203041.

It is a weak prime.

It is an emirp because it is prime and its reverse (342203041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140302243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140302243.

It is not a weakly prime, because it can be changed into another prime (140302843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70151121 + 70151122.

It is an arithmetic number, because the mean of its divisors is an integer number (70151122).

Almost surely, 2^140302243 is an apocalyptic number.

140302243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140302243 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 140302243 = (323002441)₉.

140302243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 140302243 is about 11844.9247781487. The cubic root of 140302243 is about 519.6228070827.

Adding to 140302243 its reverse (342203041), we get a palindrome (482505284).

The spelling of 140302243 in words is "one hundred forty million, three hundred two thousand, two hundred forty-three".