123404242101 has 16 divisors (see below), whose sum is σ = 188052729984. Its totient is φ = 70513645824.

The previous prime is 123404242061. The next prime is 123404242151. The reversal of 123404242101 is 101242404321.

It is not a de Polignac number, because 123404242101 - 2¹¹ = 123404240053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404242151) 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 15 ways as a sum of consecutive naturals, for example, 422241 + ... + 651993.

It is an arithmetic number, because the mean of its divisors is an integer number (11753295624).

Almost surely, 2^123404242101 is an apocalyptic number.

It is an amenable number.

123404242101 is a deficient number, since it is larger than the sum of its proper divisors (64648487883).

123404242101 is a wasteful number, since it uses less digits than its factorization.

123404242101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255340.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 123404242101 its reverse (101242404321), we get a palindrome (224646646422).

The spelling of 123404242101 in words is "one hundred twenty-three billion, four hundred four million, two hundred forty-two thousand, one hundred one".