20134021003 has 4 divisors (see below), whose sum is σ = 20625094728. Its totient is φ = 19642947280.

The previous prime is 20134020979. The next prime is 20134021007. The reversal of 20134021003 is 30012043102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20134021003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134021007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245536801 + ... + 245536882.

It is an arithmetic number, because the mean of its divisors is an integer number (5156273682).

Almost surely, 2^20134021003 is an apocalyptic number.

20134021003 is a deficient number, since it is larger than the sum of its proper divisors (491073725).

20134021003 is an equidigital number, since it uses as much as digits as its factorization.

20134021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491073724.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20134021003 its reverse (30012043102), we get a palindrome (50146064105).

The spelling of 20134021003 in words is "twenty billion, one hundred thirty-four million, twenty-one thousand, three".