123442141 has 4 divisors (see below), whose sum is σ = 125771292. Its totient is φ = 121112992.

The previous prime is 123442139. The next prime is 123442153. The reversal of 123442141 is 141244321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141244321 = 983 ⋅143687.

It can be written as a sum of positive squares in 2 ways, for example, as 100200100 + 23242041 = 10010^2 + 4821^2 .

It is a cyclic number.

It is not a de Polignac number, because 123442141 - 2¹ = 123442139 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 (123442441) 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, 1164496 + ... + 1164601.

It is an arithmetic number, because the mean of its divisors is an integer number (31442823).

Almost surely, 2^123442141 is an apocalyptic number.

It is an amenable number.

123442141 is a deficient number, since it is larger than the sum of its proper divisors (2329151).

123442141 is an equidigital number, since it uses as much as digits as its factorization.

123442141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329150.

The product of its digits is 768, while the sum is 22.

The square root of 123442141 is about 11110.4518809993. The cubic root of 123442141 is about 497.9141653541.

Adding to 123442141 its reverse (141244321), we get a palindrome (264686462).

The spelling of 123442141 in words is "one hundred twenty-three million, four hundred forty-two thousand, one hundred forty-one".