123404533 has 16 divisors (see below), whose sum is σ = 142886016. Its totient is φ = 104397120.

The previous prime is 123404497. The next prime is 123404537. The reversal of 123404533 is 335404321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123404533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123404498 and 123404507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123404537) 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, 218910 + ... + 219472.

It is an arithmetic number, because the mean of its divisors is an integer number (8930376).

Almost surely, 2^123404533 is an apocalyptic number.

It is an amenable number.

123404533 is a deficient number, since it is larger than the sum of its proper divisors (19481483).

123404533 is a wasteful number, since it uses less digits than its factorization.

123404533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 123404533 is about 11108.7592916581. The cubic root of 123404533 is about 497.8635952173.

Adding to 123404533 its reverse (335404321), we get a palindrome (458808854).

The spelling of 123404533 in words is "one hundred twenty-three million, four hundred four thousand, five hundred thirty-three".