140544541 has 8 divisors (see below), whose sum is σ = 142059960. Its totient is φ = 139034112.

The previous prime is 140544517. The next prime is 140544557. The reversal of 140544541 is 145445041.

It can be written as a sum of positive squares in 4 ways, for example, as 1988100 + 138556441 = 1410^2 + 11771^2 .

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 140544541 - 2¹⁵ = 140511773 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 (140544641) 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, 86545 + ... + 88153.

It is an arithmetic number, because the mean of its divisors is an integer number (17757495).

Almost surely, 2^140544541 is an apocalyptic number.

It is an amenable number.

140544541 is a deficient number, since it is larger than the sum of its proper divisors (1515419).

140544541 is a wasteful number, since it uses less digits than its factorization.

140544541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 140544541 is about 11855.1482909325. The cubic root of 140544541 is about 519.9217596781.

Adding to 140544541 its reverse (145445041), we get a palindrome (285989582).

The spelling of 140544541 in words is "one hundred forty million, five hundred forty-four thousand, five hundred forty-one".