12842390 has 32 divisors (see below), whose sum is σ = 25366176. Its totient is φ = 4642560.

The previous prime is 12842387. The next prime is 12842407. The reversal of 12842390 is 9324821.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34244 + ... + 34616.

It is an arithmetic number, because the mean of its divisors is an integer number (792693).

Almost surely, 2^12842390 is an apocalyptic number.

12842390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12842390 is a deficient number, since it is larger than the sum of its proper divisors (12523786).

12842390 is a wasteful number, since it uses less digits than its factorization.

12842390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12842390 is about 3583.6280498958. The cubic root of 12842390 is about 234.1793618381.

The spelling of 12842390 in words is "twelve million, eight hundred forty-two thousand, three hundred ninety".