123442101 has 48 divisors (see below), whose sum is σ = 191118720. Its totient is φ = 76671360.

The previous prime is 123442097. The next prime is 123442129. The reversal of 123442101 is 101244321.

123442101 is a `hidden beast` number, since 123 + 442 + 101 = 666.

It is not a de Polignac number, because 123442101 - 2² = 123442097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123442001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1198416 + ... + 1198518.

It is an arithmetic number, because the mean of its divisors is an integer number (3981640).

Almost surely, 2^123442101 is an apocalyptic number.

It is an amenable number.

123442101 is a deficient number, since it is larger than the sum of its proper divisors (67676619).

123442101 is a wasteful number, since it uses less digits than its factorization.

123442101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 123442101 is about 11110.4500808923. The cubic root of 123442101 is about 497.9141115730.

Adding to 123442101 its reverse (101244321), we get a palindrome (224686422).

The spelling of 123442101 in words is "one hundred twenty-three million, four hundred forty-two thousand, one hundred one".