12646242 has 48 divisors (see below), whose sum is σ = 31554432. Its totient is φ = 3585600.

The previous prime is 12646219. The next prime is 12646253. The reversal of 12646242 is 24264621.

12646242 is a `hidden beast` number, since 12 + 646 + 2 + 4 + 2 = 666.

12646242 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

12646242 is strictly pandigital in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20742 + ... + 21342.

It is an arithmetic number, because the mean of its divisors is an integer number (657384).

Almost surely, 2^12646242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12646242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15777216).

12646242 is an abundant number, since it is smaller than the sum of its proper divisors (18908190).

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

12646242 is a wasteful number, since it uses less digits than its factorization.

12646242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 780 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 12646242 is about 3556.1555084107. The cubic root of 12646242 is about 232.9809952141.

The spelling of 12646242 in words is "twelve million, six hundred forty-six thousand, two hundred forty-two".