2004215123 has 4 divisors (see below), whose sum is σ = 2004308568. Its totient is φ = 2004121680.

The previous prime is 2004215117. The next prime is 2004215137. The reversal of 2004215123 is 3215124002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3215124002 = 2 ⋅1607562001.

It is a cyclic number.

It is not a de Polignac number, because 2004215123 - 2²⁰ = 2003166547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2004215095 and 2004215104.

It is not an unprimeable number, because it can be changed into a prime (2004215113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308 + ... + 63398.

It is an arithmetic number, because the mean of its divisors is an integer number (501077142).

Almost surely, 2^2004215123 is an apocalyptic number.

2004215123 is a deficient number, since it is larger than the sum of its proper divisors (93445).

2004215123 is an equidigital number, since it uses as much as digits as its factorization.

2004215123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93444.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2004215123 is about 44768.4612534315. The cubic root of 2004215123 is about 1260.8055491726.

Adding to 2004215123 its reverse (3215124002), we get a palindrome (5219339125).

The spelling of 2004215123 in words is "two billion, four million, two hundred fifteen thousand, one hundred twenty-three".