140866543 has 8 divisors (see below), whose sum is σ = 146084400. Its totient is φ = 135672768.

The previous prime is 140866519. The next prime is 140866547. The reversal of 140866543 is 345668041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140866543 - 2⁹ = 140866031 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 (140866547) 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 7 ways as a sum of consecutive naturals, for example, 6355 + ... + 17947.

It is an arithmetic number, because the mean of its divisors is an integer number (18260550).

Almost surely, 2^140866543 is an apocalyptic number.

140866543 is a deficient number, since it is larger than the sum of its proper divisors (5217857).

140866543 is a wasteful number, since it uses less digits than its factorization.

140866543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12041.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 140866543 is about 11868.7212032299. The cubic root of 140866543 is about 520.3185215685.

The spelling of 140866543 in words is "one hundred forty million, eight hundred sixty-six thousand, five hundred forty-three".