140544841 has 4 divisors (see below), whose sum is σ = 140614272. Its totient is φ = 140475412.

The previous prime is 140544829. The next prime is 140544863. The reversal of 140544841 is 148445041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148445041 = 211 ⋅703531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140544841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140544641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31585 + ... + 35758.

It is an arithmetic number, because the mean of its divisors is an integer number (35153568).

Almost surely, 2^140544841 is an apocalyptic number.

It is an amenable number.

140544841 is a deficient number, since it is larger than the sum of its proper divisors (69431).

140544841 is an equidigital number, since it uses as much as digits as its factorization.

140544841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69430.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 140544841 is about 11855.1609436566. The cubic root of 140544841 is about 519.9221296116.

Adding to 140544841 its reverse (148445041), we get a palindrome (288989882).

The spelling of 140544841 in words is "one hundred forty million, five hundred forty-four thousand, eight hundred forty-one".