140234543 has 4 divisors (see below), whose sum is σ = 141338880. Its totient is φ = 139130208.

The previous prime is 140234539. The next prime is 140234557. The reversal of 140234543 is 345432041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345432041 = 173 ⋅1996717.

It is a cyclic number.

It is not a de Polignac number, because 140234543 - 2² = 140234539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140234503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551978 + ... + 552231.

It is an arithmetic number, because the mean of its divisors is an integer number (35334720).

Almost surely, 2^140234543 is an apocalyptic number.

140234543 is a deficient number, since it is larger than the sum of its proper divisors (1104337).

140234543 is a wasteful number, since it uses less digits than its factorization.

140234543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104336.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 140234543 is about 11842.0666692938. The cubic root of 140234543 is about 519.5392158228.

Adding to 140234543 its reverse (345432041), we get a palindrome (485666584).

The spelling of 140234543 in words is "one hundred forty million, two hundred thirty-four thousand, five hundred forty-three".