140143243 has 2 divisors, whose sum is σ = 140143244. Its totient is φ = 140143242.

The previous prime is 140143229. The next prime is 140143247. The reversal of 140143243 is 342341041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140143243 - 2²¹ = 138046091 is a prime.

It is not a weakly prime, because it can be changed into another prime (140143247) 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, 70071621 + 70071622.

It is an arithmetic number, because the mean of its divisors is an integer number (70071622).

Almost surely, 2^140143243 is an apocalyptic number.

140143243 is a deficient number, since it is larger than the sum of its proper divisors (1).

140143243 is an equidigital number, since it uses as much as digits as its factorization.

140143243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140143243 is about 11838.2111402019. The cubic root of 140143243 is about 519.4264423051.

Adding to 140143243 its reverse (342341041), we get a palindrome (482484284).

It can be divided in two parts, 1401 and 43243, that added together give a palindrome (44644).

The spelling of 140143243 in words is "one hundred forty million, one hundred forty-three thousand, two hundred forty-three".