140640404 has 24 divisors (see below), whose sum is σ = 253572480. Its totient is φ = 68203296.

The previous prime is 140640391. The next prime is 140640407. The reversal of 140640404 is 404046041.

140640404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 140640404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140640407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51809 + ... + 54455.

It is an arithmetic number, because the mean of its divisors is an integer number (10565520).

Almost surely, 2^140640404 is an apocalyptic number.

It is an amenable number.

140640404 is a deficient number, since it is larger than the sum of its proper divisors (112932076).

140640404 is a wasteful number, since it uses less digits than its factorization.

140640404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 140640404 is about 11859.1906975139. The cubic root of 140640404 is about 520.0399426912.

Adding to 140640404 its reverse (404046041), we get a palindrome (544686445).

The spelling of 140640404 in words is "one hundred forty million, six hundred forty thousand, four hundred four".