12280149 has 24 divisors (see below), whose sum is σ = 20364032. Its totient is φ = 6985440.

The previous prime is 12280141. The next prime is 12280157. The reversal of 12280149 is 94108221.

It is an interprime number because it is at equal distance from previous prime (12280141) and next prime (12280157).

It is not a de Polignac number, because 12280149 - 2³ = 12280141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280141) 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 23 ways as a sum of consecutive naturals, for example, 26292 + ... + 26754.

Almost surely, 2^12280149 is an apocalyptic number.

It is an amenable number.

12280149 is a deficient number, since it is larger than the sum of its proper divisors (8083883).

12280149 is a wasteful number, since it uses less digits than its factorization.

12280149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12280149 is about 3504.3043532205. The cubic root of 12280149 is about 230.7107753736.

The spelling of 12280149 in words is "twelve million, two hundred eighty thousand, one hundred forty-nine".