12240129 has 16 divisors (see below), whose sum is σ = 18051264. Its totient is φ = 7315200.

The previous prime is 12240121. The next prime is 12240131. The reversal of 12240129 is 92104221.

It is not a de Polignac number, because 12240129 - 2³ = 12240121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12240121) 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, 132 + ... + 4949.

It is an arithmetic number, because the mean of its divisors is an integer number (1128204).

Almost surely, 2^12240129 is an apocalyptic number.

It is an amenable number.

12240129 is a deficient number, since it is larger than the sum of its proper divisors (5811135).

12240129 is a wasteful number, since it uses less digits than its factorization.

12240129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12240129 is about 3498.5895729565. The cubic root of 12240129 is about 230.4598801187.

The spelling of 12240129 in words is "twelve million, two hundred forty thousand, one hundred twenty-nine".