12142864 has 10 divisors (see below), whose sum is σ = 23526830. Its totient is φ = 6071424.

The previous prime is 12142829. The next prime is 12142891. The reversal of 12142864 is 46824121.

It can be written as a sum of positive squares in only one way, i.e., 8456464 + 3686400 = 2908^2 + 1920^2 .

It is a super-2 number, since 2×12142864² = 294898292244992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379449 + ... + 379480.

It is an arithmetic number, because the mean of its divisors is an integer number (2352683).

Almost surely, 2^12142864 is an apocalyptic number.

It is an amenable number.

12142864 is a deficient number, since it is larger than the sum of its proper divisors (11383966).

12142864 is an equidigital number, since it uses as much as digits as its factorization.

12142864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758937 (or 758931 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 12142864 is about 3484.6612460898. The cubic root of 12142864 is about 229.8478136273.

Adding to 12142864 its reverse (46824121), we get a palindrome (58966985).

The spelling of 12142864 in words is "twelve million, one hundred forty-two thousand, eight hundred sixty-four".