2160421 has 4 divisors (see below), whose sum is σ = 2230144. Its totient is φ = 2090700.

The previous prime is 2160419. The next prime is 2160443. The reversal of 2160421 is 1240612.

2160421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2160421 - 2¹ = 2160419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2160395 and 2160404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34815 + ... + 34876.

It is an arithmetic number, because the mean of its divisors is an integer number (557536).

2^2160421 is an apocalyptic number.

It is an amenable number.

2160421 is a deficient number, since it is larger than the sum of its proper divisors (69723).

2160421 is an equidigital number, since it uses as much as digits as its factorization.

2160421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69722.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2160421 is about 1469.8370658002. The cubic root of 2160421 is about 129.2744791619.

The spelling of 2160421 in words is "two million, one hundred sixty thousand, four hundred twenty-one".