140003656 has 24 divisors (see below), whose sum is σ = 284255730. Its totient is φ = 64616448.

The previous prime is 140003629. The next prime is 140003659. The reversal of 140003656 is 656300041.

It can be written as a sum of positive squares in 3 ways, for example, as 22714756 + 117288900 = 4766^2 + 10830^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140003656.

It is not an unprimeable number, because it can be changed into a prime (140003659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50425 + ... + 53128.

Almost surely, 2^140003656 is an apocalyptic number.

It is an amenable number.

140003656 is an abundant number, since it is smaller than the sum of its proper divisors (144252074).

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

140003656 is a wasteful number, since it uses less digits than its factorization.

140003656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103585 (or 103568 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 140003656 is about 11832.3140593884. The cubic root of 140003656 is about 519.2539300883.

Adding to 140003656 its reverse (656300041), we get a palindrome (796303697).

The spelling of 140003656 in words is "one hundred forty million, three thousand, six hundred fifty-six".