123841661 has 8 divisors (see below), whose sum is σ = 126047520. Its totient is φ = 121646448.

The previous prime is 123841573. The next prime is 123841667. The reversal of 123841661 is 166148321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123841661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123841667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22955 + ... + 27831.

It is an arithmetic number, because the mean of its divisors is an integer number (15755940).

Almost surely, 2^123841661 is an apocalyptic number.

It is an amenable number.

123841661 is a deficient number, since it is larger than the sum of its proper divisors (2205859).

123841661 is an equidigital number, since it uses as much as digits as its factorization.

123841661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323.

The product of its digits is 6912, while the sum is 32.

The square root of 123841661 is about 11128.4168236097. The cubic root of 123841661 is about 498.4507526231.

Adding to 123841661 its reverse (166148321), we get a palindrome (289989982).

The spelling of 123841661 in words is "one hundred twenty-three million, eight hundred forty-one thousand, six hundred sixty-one".