12661842 has 16 divisors (see below), whose sum is σ = 25367040. Its totient is φ = 4213392.

The previous prime is 12661841. The next prime is 12661843. The reversal of 12661842 is 24816621.

It is an interprime number because it is at equal distance from previous prime (12661841) and next prime (12661843).

It is not an unprimeable number, because it can be changed into a prime (12661841) 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, 2959 + ... + 5837.

It is an arithmetic number, because the mean of its divisors is an integer number (1585440).

Almost surely, 2^12661842 is an apocalyptic number.

12661842 is an abundant number, since it is smaller than the sum of its proper divisors (12705198).

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

12661842 is a wasteful number, since it uses less digits than its factorization.

12661842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617.

The product of its digits is 4608, while the sum is 30.

The square root of 12661842 is about 3558.3482123030. The cubic root of 12661842 is about 233.0767551529.

The spelling of 12661842 in words is "twelve million, six hundred sixty-one thousand, eight hundred forty-two".