140543161 has 8 divisors (see below), whose sum is σ = 153710784. Its totient is φ = 127440720.

The previous prime is 140543159. The next prime is 140543167. The reversal of 140543161 is 161345041.

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

It is not a de Polignac number, because 140543161 - 2¹ = 140543159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140543167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11725 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (19213848).

Almost surely, 2^140543161 is an apocalyptic number.

140543161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140543161 is a deficient number, since it is larger than the sum of its proper divisors (13167623).

140543161 is a wasteful number, since it uses less digits than its factorization.

140543161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32591.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 140543161 is about 11855.0900882279. The cubic root of 140543161 is about 519.9200579770.

The spelling of 140543161 in words is "one hundred forty million, five hundred forty-three thousand, one hundred sixty-one".