123441165 has 40 divisors (see below), whose sum is σ = 234309240. Its totient is φ = 61959168.

The previous prime is 123441127. The next prime is 123441167. The reversal of 123441165 is 561144321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27910089 + 95531076 = 5283^2 + 9774^2 .

It is not a de Polignac number, because 123441165 - 2²³ = 115052557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123441167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2080 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (5857731).

Almost surely, 2^123441165 is an apocalyptic number.

123441165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123441165 is a deficient number, since it is larger than the sum of its proper divisors (110868075).

123441165 is a wasteful number, since it uses less digits than its factorization.

123441165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963 (or 17954 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 123441165 is about 11110.4079583065. The cubic root of 123441165 is about 497.9128530916.

Adding to 123441165 its reverse (561144321), we get a palindrome (684585486).

The spelling of 123441165 in words is "one hundred twenty-three million, four hundred forty-one thousand, one hundred sixty-five".