20004000123 has 8 divisors (see below), whose sum is σ = 26695755328. Its totient is φ = 13324122504.

The previous prime is 20004000119. The next prime is 20004000143. The reversal of 20004000123 is 32100040002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20004000123 - 2² = 20004000119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20004000099 and 20004000108.

It is not an unprimeable number, because it can be changed into a prime (20004000143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965465 + ... + 2972202.

It is an arithmetic number, because the mean of its divisors is an integer number (3336969416).

Almost surely, 2^20004000123 is an apocalyptic number.

20004000123 is a deficient number, since it is larger than the sum of its proper divisors (6691755205).

20004000123 is a wasteful number, since it uses less digits than its factorization.

20004000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938793.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20004000123 its reverse (32100040002), we get a palindrome (52104040125).

The spelling of 20004000123 in words is "twenty billion, four million, one hundred twenty-three", and thus it is an aban number.