12861742 has 8 divisors (see below), whose sum is σ = 19370232. Its totient is φ = 6405000.

The previous prime is 12861731. The next prime is 12861743. The reversal of 12861742 is 24716821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12309 + ... + 13312.

It is an arithmetic number, because the mean of its divisors is an integer number (2421279).

Almost surely, 2^12861742 is an apocalyptic number.

12861742 is a deficient number, since it is larger than the sum of its proper divisors (6508490).

12861742 is a wasteful number, since it uses less digits than its factorization.

12861742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25874.

The product of its digits is 5376, while the sum is 31.

The square root of 12861742 is about 3586.3270904924. The cubic root of 12861742 is about 234.2969298971.

The spelling of 12861742 in words is "twelve million, eight hundred sixty-one thousand, seven hundred forty-two".