12132455 has 4 divisors (see below), whose sum is σ = 14558952. Its totient is φ = 9705960.

The previous prime is 12132451. The next prime is 12132457. The reversal of 12132455 is 55423121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12132455 - 2² = 12132451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12132455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213241 + ... + 1213250.

It is an arithmetic number, because the mean of its divisors is an integer number (3639738).

Almost surely, 2^12132455 is an apocalyptic number.

12132455 is a deficient number, since it is larger than the sum of its proper divisors (2426497).

12132455 is an equidigital number, since it uses as much as digits as its factorization.

12132455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426496.

The product of its digits is 1200, while the sum is 23.

The square root of 12132455 is about 3483.1673804169. The cubic root of 12132455 is about 229.7821188060.

Adding to 12132455 its reverse (55423121), we get a palindrome (67555576).

The spelling of 12132455 in words is "twelve million, one hundred thirty-two thousand, four hundred fifty-five".