140012405 has 8 divisors (see below), whose sum is σ = 180939192. Its totient is φ = 103393728.

The previous prime is 140012393. The next prime is 140012413. The reversal of 140012405 is 504210041.

140012405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11847364 + 128165041 = 3442^2 + 11321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140012405 - 2⁸ = 140012149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076954 + ... + 1077083.

It is an arithmetic number, because the mean of its divisors is an integer number (22617399).

Almost surely, 2^140012405 is an apocalyptic number.

It is an amenable number.

140012405 is a deficient number, since it is larger than the sum of its proper divisors (40926787).

140012405 is a wasteful number, since it uses less digits than its factorization.

140012405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154055.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 140012405 is about 11832.6837615141. The cubic root of 140012405 is about 519.2647461344.

Adding to 140012405 its reverse (504210041), we get a palindrome (644222446).

The spelling of 140012405 in words is "one hundred forty million, twelve thousand, four hundred five".