140840544 has 72 divisors (see below), whose sum is σ = 400379112. Its totient is φ = 43330560.

The previous prime is 140840527. The next prime is 140840551. The reversal of 140840544 is 445048041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11884 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (5560821).

Almost surely, 2^140840544 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 140840544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200189556).

140840544 is an abundant number, since it is smaller than the sum of its proper divisors (259538568).

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

140840544 is a wasteful number, since it uses less digits than its factorization.

140840544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8720 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 140840544 is about 11867.6258788352. The cubic root of 140840544 is about 520.2865087775.

Adding to 140840544 its reverse (445048041), we get a palindrome (585888585).

The spelling of 140840544 in words is "one hundred forty million, eight hundred forty thousand, five hundred forty-four".