2117129 has 8 divisors (see below), whose sum is σ = 2562048. Its totient is φ = 1707840.

The previous prime is 2117119. The next prime is 2117131. The reversal of 2117129 is 9217112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2117129 - 2¹⁶ = 2051593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8777 + ... + 9014.

It is an arithmetic number, because the mean of its divisors is an integer number (320256).

2^2117129 is an apocalyptic number.

It is an amenable number.

2117129 is a deficient number, since it is larger than the sum of its proper divisors (444919).

2117129 is a wasteful number, since it uses less digits than its factorization.

2117129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17815.

The product of its digits is 252, while the sum is 23.

The square root of 2117129 is about 1455.0357383927. The cubic root of 2117129 is about 128.4051493618.

The spelling of 2117129 in words is "two million, one hundred seventeen thousand, one hundred twenty-nine".