2136443 has 4 divisors (see below), whose sum is σ = 2144328. Its totient is φ = 2128560.

The previous prime is 2136439. The next prime is 2136451. The reversal of 2136443 is 3446312.

It is a happy number.

2136443 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.

It is a cyclic number.

It is not a de Polignac number, because 2136443 - 2² = 2136439 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 3 + 6⁷ + 4 + 4⁹ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136473) 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, 3521 + ... + 4082.

It is an arithmetic number, because the mean of its divisors is an integer number (536082).

2^2136443 is an apocalyptic number.

2136443 is a deficient number, since it is larger than the sum of its proper divisors (7885).

2136443 is an equidigital number, since it uses as much as digits as its factorization.

2136443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7884.

The product of its digits is 1728, while the sum is 23.

The square root of 2136443 is about 1461.6576206486. The cubic root of 2136443 is about 128.7944365420.

The spelling of 2136443 in words is "two million, one hundred thirty-six thousand, four hundred forty-three".