2129757 has 16 divisors (see below), whose sum is σ = 3334272. Its totient is φ = 1183680.

The previous prime is 2129753. The next prime is 2129773. The reversal of 2129757 is 7579212.

It is not a de Polignac number, because 2129757 - 2² = 2129753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (208392).

2^2129757 is an apocalyptic number.

It is an amenable number.

2129757 is a deficient number, since it is larger than the sum of its proper divisors (1204515).

2129757 is a wasteful number, since it uses less digits than its factorization.

2129757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788.

The product of its digits is 8820, while the sum is 33.

The square root of 2129757 is about 1459.3686991299. The cubic root of 2129757 is about 128.6599420482.

The spelling of 2129757 in words is "two million, one hundred twenty-nine thousand, seven hundred fifty-seven".