2179129 has 4 divisors (see below), whose sum is σ = 2293840. Its totient is φ = 2064420.

The previous prime is 2179097. The next prime is 2179139. The reversal of 2179129 is 9219712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2179129 - 2⁵ = 2179097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2179129.

It is not an unprimeable number, because it can be changed into a prime (2179139) 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 3 ways as a sum of consecutive naturals, for example, 57327 + ... + 57364.

It is an arithmetic number, because the mean of its divisors is an integer number (573460).

2^2179129 is an apocalyptic number.

It is an amenable number.

2179129 is a deficient number, since it is larger than the sum of its proper divisors (114711).

2179129 is a wasteful number, since it uses less digits than its factorization.

2179129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114710.

The product of its digits is 2268, while the sum is 31.

The square root of 2179129 is about 1476.1873187370. The cubic root of 2179129 is about 129.6465547132.

The spelling of 2179129 in words is "two million, one hundred seventy-nine thousand, one hundred twenty-nine".