20004123102 has 16 divisors (see below), whose sum is σ = 40009833360. Its totient is φ = 6667776512.

The previous prime is 20004123101. The next prime is 20004123119. The reversal of 20004123102 is 20132140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004123101) 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, 154174 + ... + 252542.

It is an arithmetic number, because the mean of its divisors is an integer number (2500614585).

Almost surely, 2^20004123102 is an apocalyptic number.

20004123102 is an abundant number, since it is smaller than the sum of its proper divisors (20005710258).

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

20004123102 is a wasteful number, since it uses less digits than its factorization.

20004123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132267.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20004123102 its reverse (20132140002), we get a palindrome (40136263104).

The spelling of 20004123102 in words is "twenty billion, four million, one hundred twenty-three thousand, one hundred two".