12132857 has 16 divisors (see below), whose sum is σ = 13632192. Its totient is φ = 10705920.

The previous prime is 12132853. The next prime is 12132859. The reversal of 12132857 is 75823121.

It is a cyclic number.

It is not a de Polignac number, because 12132857 - 2² = 12132853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88493 + ... + 88629.

It is an arithmetic number, because the mean of its divisors is an integer number (852012).

Almost surely, 2^12132857 is an apocalyptic number.

It is an amenable number.

12132857 is a deficient number, since it is larger than the sum of its proper divisors (1499335).

12132857 is a wasteful number, since it uses less digits than its factorization.

12132857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 3360, while the sum is 29.

The square root of 12132857 is about 3483.2250860374. The cubic root of 12132857 is about 229.7846566653.

Adding to 12132857 its reverse (75823121), we get a palindrome (87955978).

The spelling of 12132857 in words is "twelve million, one hundred thirty-two thousand, eight hundred fifty-seven".