2129105 has 8 divisors (see below), whose sum is σ = 2787264. Its totient is φ = 1548400.

The previous prime is 2129069. The next prime is 2129107. The reversal of 2129105 is 5019212.

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

It is not a de Polignac number, because 2129105 - 2⁸ = 2128849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19301 + ... + 19410.

It is an arithmetic number, because the mean of its divisors is an integer number (348408).

2^2129105 is an apocalyptic number.

It is an amenable number.

2129105 is a deficient number, since it is larger than the sum of its proper divisors (658159).

2129105 is a wasteful number, since it uses less digits than its factorization.

2129105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38727.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2129105 is about 1459.1452977685. The cubic root of 2129105 is about 128.6468114666.

The spelling of 2129105 in words is "two million, one hundred twenty-nine thousand, one hundred five".