20104135 has 16 divisors (see below), whose sum is σ = 24930432. Its totient is φ = 15552000.

The previous prime is 20104129. The next prime is 20104141. The reversal of 20104135 is 53140102.

It is an interprime number because it is at equal distance from previous prime (20104129) and next prime (20104141).

It is not a de Polignac number, because 20104135 - 2¹¹ = 20102087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49935 + ... + 50335.

It is an arithmetic number, because the mean of its divisors is an integer number (1558152).

Almost surely, 2^20104135 is an apocalyptic number.

20104135 is a deficient number, since it is larger than the sum of its proper divisors (4826297).

20104135 is a wasteful number, since it uses less digits than its factorization.

20104135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20104135 is about 4483.7634861799. The cubic root of 20104135 is about 271.9120561637.

Adding to 20104135 its reverse (53140102), we get a palindrome (73244237).

The spelling of 20104135 in words is "twenty million, one hundred four thousand, one hundred thirty-five".