12861342 has 80 divisors (see below), whose sum is σ = 32199552. Its totient is φ = 3810240.

The previous prime is 12861341. The next prime is 12861349. The reversal of 12861342 is 24316821.

12861342 is a `hidden beast` number, since 1 + 2 + 8 + 613 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 65188 + ... + 65384.

Almost surely, 2^12861342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12861342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16099776).

12861342 is an abundant number, since it is smaller than the sum of its proper divisors (19338210).

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

12861342 is a wasteful number, since it uses less digits than its factorization.

12861342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 246 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12861342 is about 3586.2713226972. The cubic root of 12861342 is about 234.2945009948.

It can be divided in two parts, 12861 and 342, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12861342 in words is "twelve million, eight hundred sixty-one thousand, three hundred forty-two".