20130403042123 has 8 divisors (see below), whose sum is σ = 23252230252080. Its totient is φ = 17223874260480.

The previous prime is 20130403042037. The next prime is 20130403042133. The reversal of 20130403042123 is 32124030403102.

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 20130403042123 - 2²¹ = 20130400944971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130403042133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53824606878 + ... + 53824607251.

It is an arithmetic number, because the mean of its divisors is an integer number (2906528781510).

Almost surely, 2^{20130403042123} is an apocalyptic number.

20130403042123 is a deficient number, since it is larger than the sum of its proper divisors (3121827209957).

20130403042123 is a wasteful number, since it uses less digits than its factorization.

20130403042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107649214157.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20130403042123 its reverse (32124030403102), we get a palindrome (52254433445225).

The spelling of 20130403042123 in words is "twenty trillion, one hundred thirty billion, four hundred three million, forty-two thousand, one hundred twenty-three".