12149255 has 4 divisors (see below), whose sum is σ = 14579112. Its totient is φ = 9719400.

The previous prime is 12149233. The next prime is 12149257. The reversal of 12149255 is 55294121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55294121 = 61 ⋅906461.

It is not a de Polignac number, because 12149255 - 2⁶ = 12149191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149257) 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, 1214921 + ... + 1214930.

It is an arithmetic number, because the mean of its divisors is an integer number (3644778).

Almost surely, 2^12149255 is an apocalyptic number.

12149255 is a deficient number, since it is larger than the sum of its proper divisors (2429857).

12149255 is an equidigital number, since it uses as much as digits as its factorization.

12149255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429856.

The product of its digits is 3600, while the sum is 29.

The square root of 12149255 is about 3485.5781442969. The cubic root of 12149255 is about 229.8881308523. Note that the first 3 decimals are identical.

The spelling of 12149255 in words is "twelve million, one hundred forty-nine thousand, two hundred fifty-five".