2159743 has 4 divisors (see below), whose sum is σ = 2185848. Its totient is φ = 2133640.

The previous prime is 2159719. The next prime is 2159767. The reversal of 2159743 is 3479512.

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

It is an interprime number because it is at equal distance from previous prime (2159719) and next prime (2159767).

It is a cyclic number.

It is not a de Polignac number, because 2159743 - 2⁹ = 2159231 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 5⁵ + 9 + 7³ + 4³ + 3¹⁰ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159713) 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, 12928 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (546462).

2^2159743 is an apocalyptic number.

2159743 is a deficient number, since it is larger than the sum of its proper divisors (26105).

2159743 is an equidigital number, since it uses as much as digits as its factorization.

2159743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104.

The product of its digits is 7560, while the sum is 31.

The square root of 2159743 is about 1469.6064098935. The cubic root of 2159743 is about 129.2609544419.

The spelling of 2159743 in words is "two million, one hundred fifty-nine thousand, seven hundred forty-three".