12142664 has 16 divisors (see below), whose sum is σ = 22805820. Its totient is φ = 6061120.

The previous prime is 12142661. The next prime is 12142667. The reversal of 12142664 is 46624121.

It is an interprime number because it is at equal distance from previous prime (12142661) and next prime (12142667).

It can be written as a sum of positive squares in 2 ways, for example, as 11957764 + 184900 = 3458^2 + 430^2 .

It is not an unprimeable number, because it can be changed into a prime (12142661) 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, 6722 + ... + 8334.

Almost surely, 2^12142664 is an apocalyptic number.

It is an amenable number.

12142664 is a deficient number, since it is larger than the sum of its proper divisors (10663156).

12142664 is a wasteful number, since it uses less digits than its factorization.

12142664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560 (or 2556 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 12142664 is about 3484.6325487776. The cubic root of 12142664 is about 229.8465517115.

Adding to 12142664 its reverse (46624121), we get a palindrome (58766785).

The spelling of 12142664 in words is "twelve million, one hundred forty-two thousand, six hundred sixty-four".