12132705 has 16 divisors (see below), whose sum is σ = 20905920. Its totient is φ = 5972928.

The previous prime is 12132689. The next prime is 12132709. The reversal of 12132705 is 50723121.

It is not a de Polignac number, because 12132705 - 2⁴ = 12132689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12132709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30915 + ... + 31304.

It is an arithmetic number, because the mean of its divisors is an integer number (1306620).

Almost surely, 2^12132705 is an apocalyptic number.

12132705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12132705 is a deficient number, since it is larger than the sum of its proper divisors (8773215).

12132705 is a wasteful number, since it uses less digits than its factorization.

12132705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62240.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12132705 is about 3483.2032671092. The cubic root of 12132705 is about 229.7836970833.

Adding to 12132705 its reverse (50723121), we get a palindrome (62855826).

The spelling of 12132705 in words is "twelve million, one hundred thirty-two thousand, seven hundred five".