2102443 has 12 divisors (see below), whose sum is σ = 2474712. Its totient is φ = 1780800.

The previous prime is 2102431. The next prime is 2102459. The reversal of 2102443 is 3442012.

It is not a de Polignac number, because 2102443 - 2⁵ = 2102411 is a prime.

It is a Duffinian number.

2102443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2102143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5043 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (206226).

2^2102443 is an apocalyptic number.

2102443 is a deficient number, since it is larger than the sum of its proper divisors (372269).

2102443 is a wasteful number, since it uses less digits than its factorization.

2102443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2102443 is about 1449.9803446944. The cubic root of 2102443 is about 128.1075552692.

Adding to 2102443 its reverse (3442012), we get a palindrome (5544455).

The spelling of 2102443 in words is "two million, one hundred two thousand, four hundred forty-three".