2129387 has 16 divisors (see below), whose sum is σ = 2489760. Its totient is φ = 1804032.

The previous prime is 2129371. The next prime is 2129389. The reversal of 2129387 is 7839212.

It is a cyclic number.

It is not a de Polignac number, because 2129387 - 2⁴ = 2129371 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2129389) 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, 9023 + ... + 9255.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

2^2129387 is an apocalyptic number.

2129387 is a deficient number, since it is larger than the sum of its proper divisors (360373).

2129387 is a wasteful number, since it uses less digits than its factorization.

2129387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302.

The product of its digits is 6048, while the sum is 32.

The square root of 2129387 is about 1459.2419264810. The cubic root of 2129387 is about 128.6524909735.

The spelling of 2129387 in words is "two million, one hundred twenty-nine thousand, three hundred eighty-seven".