12256842 has 64 divisors (see below), whose sum is σ = 28191744. Its totient is φ = 3525120.

The previous prime is 12256831. The next prime is 12256883. The reversal of 12256842 is 24865221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89398 + ... + 89534.

It is an arithmetic number, because the mean of its divisors is an integer number (440496).

Almost surely, 2^12256842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12256842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14095872).

12256842 is an abundant number, since it is smaller than the sum of its proper divisors (15934902).

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

12256842 is a wasteful number, since it uses less digits than its factorization.

12256842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223.

The product of its digits is 7680, while the sum is 30.

The square root of 12256842 is about 3500.9772921286. The cubic root of 12256842 is about 230.5647244452.

The spelling of 12256842 in words is "twelve million, two hundred fifty-six thousand, eight hundred forty-two".