2004123543 has 16 divisors (see below), whose sum is σ = 2712289536. Its totient is φ = 1316169920.

The previous prime is 2004123533. The next prime is 2004123571. The reversal of 2004123543 is 3453214002.

It is a cyclic number.

It is not a de Polignac number, because 2004123543 - 2⁶ = 2004123479 is a prime.

It is a super-2 number, since 2×2004123543² = 8033022351213745698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004123533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35230 + ... + 72452.

It is an arithmetic number, because the mean of its divisors is an integer number (169518096).

Almost surely, 2^2004123543 is an apocalyptic number.

2004123543 is a deficient number, since it is larger than the sum of its proper divisors (708165993).

2004123543 is a wasteful number, since it uses less digits than its factorization.

2004123543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37494.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2004123543 is about 44767.4384234792. The cubic root of 2004123543 is about 1260.7863452576.

Adding to 2004123543 its reverse (3453214002), we get a palindrome (5457337545).

The spelling of 2004123543 in words is "two billion, four million, one hundred twenty-three thousand, five hundred forty-three".