140544 has 54 divisors (see below), whose sum is σ = 411866. Its totient is φ = 46080.

The previous prime is 140533. The next prime is 140549. The reversal of 140544 is 445041.

It can be written as a sum of positive squares in only one way, i.e., 82944 + 57600 = 288^2 + 240^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140549) by changing a digit.

140544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2274 + ... + 2334.

2¹⁴⁰⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205933).

140544 is an abundant number, since it is smaller than the sum of its proper divisors (271322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140544 is an equidigital number, since it uses as much as digits as its factorization.

140544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 140544 is about 374.8919844435. The cubic root of 140544 is about 51.9921092563.

Adding to 140544 its reverse (445041), we get a palindrome (585585).

The spelling of 140544 in words is "one hundred forty thousand, five hundred forty-four".