12840029 has 8 divisors (see below), whose sum is σ = 13651680. Its totient is φ = 12042000.

The previous prime is 12840019. The next prime is 12840031. The reversal of 12840029 is 92004821.

12840029 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 12840029 - 2⁴ = 12840013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (1706460).

Almost surely, 2^12840029 is an apocalyptic number.

12840029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12840029 is a deficient number, since it is larger than the sum of its proper divisors (811651).

12840029 is a wasteful number, since it uses less digits than its factorization.

12840029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12840029 is about 3583.2986199869. The cubic root of 12840029 is about 234.1650101128.

The spelling of 12840029 in words is "twelve million, eight hundred forty thousand, twenty-nine".