20104102 has 4 divisors (see below), whose sum is σ = 30156156. Its totient is φ = 10052050.

The previous prime is 20104067. The next prime is 20104129. The reversal of 20104102 is 20140102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5026024 + ... + 5026027.

It is an arithmetic number, because the mean of its divisors is an integer number (7539039).

Almost surely, 2^20104102 is an apocalyptic number.

20104102 is a deficient number, since it is larger than the sum of its proper divisors (10052054).

20104102 is a wasteful number, since it uses less digits than its factorization.

20104102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052053.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20104102 is about 4483.7598062340. The cubic root of 20104102 is about 271.9119073866.

Adding to 20104102 its reverse (20140102), we get a palindrome (40244204).

The spelling of 20104102 in words is "twenty million, one hundred four thousand, one hundred two".