2104421 has 8 divisors (see below), whose sum is σ = 2416800. Its totient is φ = 1812240.

The previous prime is 2104397. The next prime is 2104423. The reversal of 2104421 is 1244012.

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 2104421 - 2⁶ = 2104357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2104396 and 2104405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104423) 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, 4826 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (302100).

2^2104421 is an apocalyptic number.

It is an amenable number.

2104421 is a deficient number, since it is larger than the sum of its proper divisors (312379).

2104421 is a wasteful number, since it uses less digits than its factorization.

2104421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2104421 is about 1450.6622625546. The cubic root of 2104421 is about 128.1477176453.

Adding to 2104421 its reverse (1244012), we get a palindrome (3348433).

The spelling of 2104421 in words is "two million, one hundred four thousand, four hundred twenty-one".