12840302 has 8 divisors (see below), whose sum is σ = 20097936. Its totient is φ = 6140992.

The previous prime is 12840299. The next prime is 12840307. The reversal of 12840302 is 20304821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840307) 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, 139523 + ... + 139614.

It is an arithmetic number, because the mean of its divisors is an integer number (2512242).

Almost surely, 2^12840302 is an apocalyptic number.

12840302 is a deficient number, since it is larger than the sum of its proper divisors (7257634).

12840302 is a wasteful number, since it uses less digits than its factorization.

12840302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279162.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12840302 is about 3583.3367131767. The cubic root of 12840302 is about 234.1666696780.

The spelling of 12840302 in words is "twelve million, eight hundred forty thousand, three hundred two".