2129087 has 4 divisors (see below), whose sum is σ = 2221680. Its totient is φ = 2036496.

The previous prime is 2129069. The next prime is 2129107. The reversal of 2129087 is 7809212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2129087 - 2⁸ = 2128831 is a prime.

It is a super-2 number, since 2×2129087² = 9066022907138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129027) 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 3 ways as a sum of consecutive naturals, for example, 46262 + ... + 46307.

It is an arithmetic number, because the mean of its divisors is an integer number (555420).

2^2129087 is an apocalyptic number.

2129087 is a deficient number, since it is larger than the sum of its proper divisors (92593).

2129087 is an equidigital number, since it uses as much as digits as its factorization.

2129087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92592.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2129087 is about 1459.1391297611. The cubic root of 2129087 is about 128.6464489279.

The spelling of 2129087 in words is "two million, one hundred twenty-nine thousand, eighty-seven".