140044540 has 12 divisors (see below), whose sum is σ = 294093576. Its totient is φ = 56017808.

The previous prime is 140044523. The next prime is 140044543. The reversal of 140044540 is 45440041.

140044540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140044540² = 39224946367623200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140044543) 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, 3501094 + ... + 3501133.

It is an arithmetic number, because the mean of its divisors is an integer number (24507798).

Almost surely, 2^140044540 is an apocalyptic number.

140044540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140044540 is an abundant number, since it is smaller than the sum of its proper divisors (154049036).

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

140044540 is a wasteful number, since it uses less digits than its factorization.

140044540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002236 (or 7002234 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140044540 is about 11834.0415750495. The cubic root of 140044540 is about 519.3044695103.

Adding to 140044540 its reverse (45440041), we get a palindrome (185484581).

The spelling of 140044540 in words is "one hundred forty million, forty-four thousand, five hundred forty".