123235661 has 8 divisors (see below), whose sum is σ = 125499360. Its totient is φ = 120990672.

The previous prime is 123235631. The next prime is 123235667. The reversal of 123235661 is 166532321.

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

It is a cyclic number.

It is not a de Polignac number, because 123235661 - 2¹⁴ = 123219277 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 (123235667) 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, 8975 + ... + 18083.

It is an arithmetic number, because the mean of its divisors is an integer number (15687420).

Almost surely, 2^123235661 is an apocalyptic number.

It is an amenable number.

123235661 is a deficient number, since it is larger than the sum of its proper divisors (2263699).

123235661 is an equidigital number, since it uses as much as digits as its factorization.

123235661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9355.

The product of its digits is 6480, while the sum is 29.

The square root of 123235661 is about 11101.1558407222. The cubic root of 123235661 is about 497.6363923237.

Adding to 123235661 its reverse (166532321), we get a palindrome (289767982).

The spelling of 123235661 in words is "one hundred twenty-three million, two hundred thirty-five thousand, six hundred sixty-one".