140566241 has 4 divisors (see below), whose sum is σ = 140684484. Its totient is φ = 140448000.

The previous prime is 140566213. The next prime is 140566243. The reversal of 140566241 is 142665041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25969216 + 114597025 = 5096^2 + 10705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140566241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140566243) 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 in 3 ways as a sum of consecutive naturals, for example, 57320 + ... + 59721.

It is an arithmetic number, because the mean of its divisors is an integer number (35171121).

Almost surely, 2^140566241 is an apocalyptic number.

It is an amenable number.

140566241 is a deficient number, since it is larger than the sum of its proper divisors (118243).

140566241 is a wasteful number, since it uses less digits than its factorization.

140566241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118242.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 140566241 is about 11856.0634698031. The cubic root of 140566241 is about 519.9485168458.

The spelling of 140566241 in words is "one hundred forty million, five hundred sixty-six thousand, two hundred forty-one".