2123443 has 8 divisors (see below), whose sum is σ = 2435840. Its totient is φ = 1813320.

The previous prime is 2123423. The next prime is 2123461. The reversal of 2123443 is 3443212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123443 - 2⁵ = 2123411 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 2¹⁹ + 3⁶ + 4 + 4⁶ + 3¹³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123443.

It is not an unprimeable number, because it can be changed into a prime (2123423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2728 + ... + 3418.

It is an arithmetic number, because the mean of its divisors is an integer number (304480).

2^2123443 is an apocalyptic number.

2123443 is a deficient number, since it is larger than the sum of its proper divisors (312397).

2123443 is an equidigital number, since it uses as much as digits as its factorization.

2123443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its digits is 576, while the sum is 19.

The square root of 2123443 is about 1457.2038292566. The cubic root of 2123443 is about 128.5326719751.

Adding to 2123443 its reverse (3443212), we get a palindrome (5566655).

It can be divided in two parts, 212 and 3443, that added together give a triangular number (3655 = T₈₅).

The spelling of 2123443 in words is "two million, one hundred twenty-three thousand, four hundred forty-three".