2104508421 has 24 divisors (see below), whose sum is σ = 3248766144. Its totient is φ = 1308124800.

The previous prime is 2104508389. The next prime is 2104508423. The reversal of 2104508421 is 1248054012.

It is not a de Polignac number, because 2104508421 - 2⁵ = 2104508389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104508423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47905 + ... + 80646.

It is an arithmetic number, because the mean of its divisors is an integer number (135365256).

Almost surely, 2^2104508421 is an apocalyptic number.

It is an amenable number.

2104508421 is a deficient number, since it is larger than the sum of its proper divisors (1144257723).

2104508421 is a wasteful number, since it uses less digits than its factorization.

2104508421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128681 (or 128678 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2104508421 is about 45874.9214822216. The cubic root of 2104508421 is about 1281.4949210753.

The spelling of 2104508421 in words is "two billion, one hundred four million, five hundred eight thousand, four hundred twenty-one".