123233505 has 16 divisors (see below), whose sum is σ = 199018944. Its totient is φ = 65109440.

The previous prime is 123233501. The next prime is 123233531. The reversal of 123233505 is 505332321.

It is a happy number.

It is not a de Polignac number, because 123233505 - 2² = 123233501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123233501) 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 15 ways as a sum of consecutive naturals, for example, 36786 + ... + 39995.

It is an arithmetic number, because the mean of its divisors is an integer number (12438684).

Almost surely, 2^123233505 is an apocalyptic number.

123233505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123233505 is a deficient number, since it is larger than the sum of its proper divisors (75785439).

123233505 is a wasteful number, since it uses less digits than its factorization.

123233505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76896.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 123233505 is about 11101.0587332921. The cubic root of 123233505 is about 497.6334902678.

Adding to 123233505 its reverse (505332321), we get a palindrome (628565826).

The spelling of 123233505 in words is "one hundred twenty-three million, two hundred thirty-three thousand, five hundred five".