12817842 has 16 divisors (see below), whose sum is σ = 25709952. Its totient is φ = 4260240.

The previous prime is 12817841. The next prime is 12817853. The reversal of 12817842 is 24871821.

It is a happy number.

12817842 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12817841) 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, 709 + ... + 5112.

It is an arithmetic number, because the mean of its divisors is an integer number (1606872).

Almost surely, 2^12817842 is an apocalyptic number.

12817842 is an abundant number, since it is smaller than the sum of its proper divisors (12892110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12817842 is a wasteful number, since it uses less digits than its factorization.

12817842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193.

The product of its digits is 7168, while the sum is 33.

The square root of 12817842 is about 3580.2013909835. The cubic root of 12817842 is about 234.0300567717.

The spelling of 12817842 in words is "twelve million, eight hundred seventeen thousand, eight hundred forty-two".