2106129 has 8 divisors (see below), whose sum is σ = 2876832. Its totient is φ = 1369760.

The previous prime is 2106107. The next prime is 2106149. The reversal of 2106129 is 9216012.

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 2106129 - 2¹⁵ = 2073361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2106149) 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, 8439 + ... + 8684.

It is an arithmetic number, because the mean of its divisors is an integer number (359604).

2^2106129 is an apocalyptic number.

It is an amenable number.

2106129 is a deficient number, since it is larger than the sum of its proper divisors (770703).

2106129 is a wasteful number, since it uses less digits than its factorization.

2106129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17167.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 2106129 is about 1451.2508397930. The cubic root of 2106129 is about 128.1823775531.

The spelling of 2106129 in words is "two million, one hundred six thousand, one hundred twenty-nine".