12661422 has 16 divisors (see below), whose sum is σ = 25486032. Its totient is φ = 4193280.

The previous prime is 12661399. The next prime is 12661433. The reversal of 12661422 is 22416621.

It is a junction number, because it is equal to n+sod(n) for n = 12661392 and 12661401.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5779 + ... + 7662.

It is an arithmetic number, because the mean of its divisors is an integer number (1592877).

Almost surely, 2^12661422 is an apocalyptic number.

12661422 is an abundant number, since it is smaller than the sum of its proper divisors (12824610).

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

12661422 is a wasteful number, since it uses less digits than its factorization.

12661422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13603.

The product of its digits is 1152, while the sum is 24.

The square root of 12661422 is about 3558.2891956669. The cubic root of 12661422 is about 233.0741780313.

The spelling of 12661422 in words is "twelve million, six hundred sixty-one thousand, four hundred twenty-two".