12649842 has 24 divisors (see below), whose sum is σ = 27678144. Its totient is φ = 4175064.

The previous prime is 12649841. The next prime is 12649873. The reversal of 12649842 is 24894621.

12649842 is a `hidden beast` number, since 1 + 2 + 649 + 8 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12649797 and 12649806.

It is not an unprimeable number, because it can be changed into a prime (12649841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1558 + ... + 5265.

It is an arithmetic number, because the mean of its divisors is an integer number (1153256).

Almost surely, 2^12649842 is an apocalyptic number.

12649842 is an abundant number, since it is smaller than the sum of its proper divisors (15028302).

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

12649842 is a wasteful number, since it uses less digits than its factorization.

12649842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934 (or 6931 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 12649842 is about 3556.6616369849. The cubic root of 12649842 is about 233.0031006483.

The spelling of 12649842 in words is "twelve million, six hundred forty-nine thousand, eight hundred forty-two".