123966533 has 4 divisors (see below), whose sum is σ = 131258700. Its totient is φ = 116674368.

The previous prime is 123966529. The next prime is 123966541. The reversal of 123966533 is 335669321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68939809 + 55026724 = 8303^2 + 7418^2 .

It is a cyclic number.

It is not a de Polignac number, because 123966533 - 2² = 123966529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123966133) 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 3 ways as a sum of consecutive naturals, for example, 3646058 + ... + 3646091.

It is an arithmetic number, because the mean of its divisors is an integer number (32814675).

Almost surely, 2^123966533 is an apocalyptic number.

It is an amenable number.

123966533 is a deficient number, since it is larger than the sum of its proper divisors (7292167).

123966533 is an equidigital number, since it uses as much as digits as its factorization.

123966533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292166.

The product of its digits is 87480, while the sum is 38.

The square root of 123966533 is about 11134.0259115919. The cubic root of 123966533 is about 498.6182289351.

The spelling of 123966533 in words is "one hundred twenty-three million, nine hundred sixty-six thousand, five hundred thirty-three".