20002123403 has 8 divisors (see below), whose sum is σ = 21085350720. Its totient is φ = 18921944520.

The previous prime is 20002123357. The next prime is 20002123457. The reversal of 20002123403 is 30432120002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002123403 - 2⁸ = 20002123147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002123303) 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, 748625 + ... + 774882.

It is an arithmetic number, because the mean of its divisors is an integer number (2635668840).

Almost surely, 2^20002123403 is an apocalyptic number.

20002123403 is a deficient number, since it is larger than the sum of its proper divisors (1083227317).

20002123403 is a wasteful number, since it uses less digits than its factorization.

20002123403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524217.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20002123403 its reverse (30432120002), we get a palindrome (50434243405).

The spelling of 20002123403 in words is "twenty billion, two million, one hundred twenty-three thousand, four hundred three".