123404101 has 4 divisors (see below), whose sum is σ = 123518304. Its totient is φ = 123289900.

The previous prime is 123404059. The next prime is 123404119. The reversal of 123404101 is 101404321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123404101 - 2¹¹ = 123402053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404201) 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, 55465 + ... + 57646.

It is an arithmetic number, because the mean of its divisors is an integer number (30879576).

Almost surely, 2^123404101 is an apocalyptic number.

It is an amenable number.

123404101 is a deficient number, since it is larger than the sum of its proper divisors (114203).

123404101 is a wasteful number, since it uses less digits than its factorization.

123404101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114202.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 123404101 is about 11108.7398475255. The cubic root of 123404101 is about 497.8630142626.

Adding to 123404101 its reverse (101404321), we get a palindrome (224808422).

The spelling of 123404101 in words is "one hundred twenty-three million, four hundred four thousand, one hundred one".