12840035 has 8 divisors (see below), whose sum is σ = 16593360. Its totient is φ = 9481824.

The previous prime is 12840031. The next prime is 12840089. The reversal of 12840035 is 53004821.

12840035 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12840035 - 2² = 12840031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12840031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98705 + ... + 98834.

It is an arithmetic number, because the mean of its divisors is an integer number (2074170).

Almost surely, 2^12840035 is an apocalyptic number.

12840035 is a deficient number, since it is larger than the sum of its proper divisors (3753325).

12840035 is a wasteful number, since it uses less digits than its factorization.

12840035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197557.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12840035 is about 3583.2994572042. The cubic root of 12840035 is about 234.1650465870.

Adding to 12840035 its reverse (53004821), we get a palindrome (65844856).

The spelling of 12840035 in words is "twelve million, eight hundred forty thousand, thirty-five".