12142865 has 8 divisors (see below), whose sum is σ = 16653120. Its totient is φ = 8326512.

The previous prime is 12142829. The next prime is 12142891. The reversal of 12142865 is 56824121.

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

It is a cyclic number.

It is not a de Polignac number, because 12142865 - 2⁸ = 12142609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173435 + ... + 173504.

It is an arithmetic number, because the mean of its divisors is an integer number (2081640).

Almost surely, 2^12142865 is an apocalyptic number.

It is an amenable number.

12142865 is a deficient number, since it is larger than the sum of its proper divisors (4510255).

12142865 is an equidigital number, since it uses as much as digits as its factorization.

12142865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346951.

The product of its digits is 3840, while the sum is 29.

The square root of 12142865 is about 3484.6613895758. The cubic root of 12142865 is about 229.8478199368.

Adding to 12142865 its reverse (56824121), we get a palindrome (68966986).

The spelling of 12142865 in words is "twelve million, one hundred forty-two thousand, eight hundred sixty-five".