12918742 has 8 divisors (see below), whose sum is σ = 20518056. Its totient is φ = 6079392.

The previous prime is 12918733. The next prime is 12918743. The reversal of 12918742 is 24781921.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 379963 = 12918742 / (1 + 2 + 9 + 1 + 8 + 7 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 12918698 and 12918707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918743) 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, 189948 + ... + 190015.

It is an arithmetic number, because the mean of its divisors is an integer number (2564757).

Almost surely, 2^12918742 is an apocalyptic number.

12918742 is a deficient number, since it is larger than the sum of its proper divisors (7599314).

12918742 is a wasteful number, since it uses less digits than its factorization.

12918742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379982.

The product of its digits is 8064, while the sum is 34.

The square root of 12918742 is about 3594.2651543814. The cubic root of 12918742 is about 234.6425348413.

The spelling of 12918742 in words is "twelve million, nine hundred eighteen thousand, seven hundred forty-two".