140544461 has 4 divisors (see below), whose sum is σ = 140704512. Its totient is φ = 140384412.

The previous prime is 140544419. The next prime is 140544473. The reversal of 140544461 is 164445041.

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.

It is a cyclic number.

It is not a de Polignac number, because 140544461 - 2¹⁴ = 140528077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140544961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78701 + ... + 80466.

It is an arithmetic number, because the mean of its divisors is an integer number (35176128).

Almost surely, 2^140544461 is an apocalyptic number.

It is an amenable number.

140544461 is a deficient number, since it is larger than the sum of its proper divisors (160051).

140544461 is an equidigital number, since it uses as much as digits as its factorization.

140544461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160050.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 140544461 is about 11855.1449168705. The cubic root of 140544461 is about 519.9216610291.

The spelling of 140544461 in words is "one hundred forty million, five hundred forty-four thousand, four hundred sixty-one".