2144403 has 6 divisors (see below), whose sum is σ = 3097484. Its totient is φ = 1429596.

The previous prime is 2144399. The next prime is 2144407. The reversal of 2144403 is 3044412.

It is an interprime number because it is at equal distance from previous prime (2144399) and next prime (2144407).

It is not a de Polignac number, because 2144403 - 2² = 2144399 is a prime.

It is a Duffinian number.

2144403 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2144407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119125 + ... + 119142.

2^2144403 is an apocalyptic number.

2144403 is a deficient number, since it is larger than the sum of its proper divisors (953081).

2144403 is a wasteful number, since it uses less digits than its factorization.

2144403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238273 (or 238270 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2144403 is about 1464.3780249649. The cubic root of 2144403 is about 128.9541932189.

Adding to 2144403 its reverse (3044412), we get a palindrome (5188815).

Subtracting 2144403 from its reverse (3044412), we obtain a palindrome (900009).

The spelling of 2144403 in words is "two million, one hundred forty-four thousand, four hundred three".