123005533 has 12 divisors (see below), whose sum is σ = 146135232. Its totient is φ = 103188120.

The previous prime is 123005521. The next prime is 123005537. The reversal of 123005533 is 335500321.

It is a happy number.

It is not a de Polignac number, because 123005533 - 2²⁵ = 89451101 is a prime.

It is a super-2 number, since 2×123005533² = 30260722297228178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123005537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24403 + ... + 29008.

It is an arithmetic number, because the mean of its divisors is an integer number (12177936).

Almost surely, 2^123005533 is an apocalyptic number.

It is an amenable number.

123005533 is a deficient number, since it is larger than the sum of its proper divisors (23129699).

123005533 is an equidigital number, since it uses as much as digits as its factorization.

123005533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53472 (or 53465 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 123005533 is about 11090.7859505086. The cubic root of 123005533 is about 497.3264403043.

Adding to 123005533 its reverse (335500321), we get a palindrome (458505854).

The spelling of 123005533 in words is "one hundred twenty-three million, five thousand, five hundred thirty-three".