123440233 has 16 divisors (see below), whose sum is σ = 148386816. Its totient is φ = 100451520.

The previous prime is 123440227. The next prime is 123440257. The reversal of 123440233 is 332044321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123440233 - 2²¹ = 121343081 is a prime.

It is a super-2 number, since 2×123440233² = 30474982246188578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123440263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6135 + ... + 16867.

It is an arithmetic number, because the mean of its divisors is an integer number (9274176).

Almost surely, 2^123440233 is an apocalyptic number.

It is an amenable number.

123440233 is a deficient number, since it is larger than the sum of its proper divisors (24946583).

123440233 is a wasteful number, since it uses less digits than its factorization.

123440233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10824.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 123440233 is about 11110.3660155730. The cubic root of 123440233 is about 497.9115999819.

Adding to 123440233 its reverse (332044321), we get a palindrome (455484554).

The spelling of 123440233 in words is "one hundred twenty-three million, four hundred forty thousand, two hundred thirty-three".