11820129 has 16 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 7718400.

The previous prime is 11820121. The next prime is 11820161. The reversal of 11820129 is 92102811.

It is not a de Polignac number, because 11820129 - 2³ = 11820121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11820099 and 11820108.

It is not an unprimeable number, because it can be changed into a prime (11820121) 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 15 ways as a sum of consecutive naturals, for example, 43807 + ... + 44075.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^11820129 is an apocalyptic number.

It is an amenable number.

11820129 is a deficient number, since it is larger than the sum of its proper divisors (4267551).

11820129 is a wasteful number, since it uses less digits than its factorization.

11820129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 11820129 is about 3438.0414482667. The cubic root of 11820129 is about 227.7931912014.

The spelling of 11820129 in words is "eleven million, eight hundred twenty thousand, one hundred twenty-nine".