12142868 has 6 divisors (see below), whose sum is σ = 21250026. Its totient is φ = 6071432.

The previous prime is 12142829. The next prime is 12142891. The reversal of 12142868 is 86824121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8690704 + 3452164 = 2948^2 + 1858^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1517855 + ... + 1517862.

It is an arithmetic number, because the mean of its divisors is an integer number (3541671).

Almost surely, 2^12142868 is an apocalyptic number.

It is an amenable number.

12142868 is a deficient number, since it is larger than the sum of its proper divisors (9107158).

12142868 is a wasteful number, since it uses less digits than its factorization.

12142868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035721 (or 3035719 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 12142868 is about 3484.6618200336. The cubic root of 12142868 is about 229.8478388654.

Adding to 12142868 its reverse (86824121), we get a palindrome (98966989).

The spelling of 12142868 in words is "twelve million, one hundred forty-two thousand, eight hundred sixty-eight".