20404203423102 has 24 divisors (see below), whose sum is σ = 44210159131320. Its totient is φ = 6801239338800.

The previous prime is 20404203423089. The next prime is 20404203423119. The reversal of 20404203423102 is 20132430240402.

20404203423102 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 4 + 2 + 0 + 342 + 310 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12704652 + ... + 14220287.

It is an arithmetic number, because the mean of its divisors is an integer number (1842089963805).

Almost surely, 2^{20404203423102} is an apocalyptic number.

20404203423102 is an abundant number, since it is smaller than the sum of its proper divisors (23805955708218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20404203423102 is a wasteful number, since it uses less digits than its factorization.

20404203423102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26967048 (or 26967045 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20404203423102 its reverse (20132430240402), we get a palindrome (40536633663504).

The spelling of 20404203423102 in words is "twenty trillion, four hundred four billion, two hundred three million, four hundred twenty-three thousand, one hundred two".