123660133 has 4 divisors (see below), whose sum is σ = 123804288. Its totient is φ = 123515980.

The previous prime is 123660109. The next prime is 123660161. The reversal of 123660133 is 331066321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331066321 = 1753 ⋅188857.

It is a cyclic number.

It is not a de Polignac number, because 123660133 - 2⁵ = 123660101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123660098 and 123660107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123664133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70783 + ... + 72508.

It is an arithmetic number, because the mean of its divisors is an integer number (30951072).

Almost surely, 2^123660133 is an apocalyptic number.

It is an amenable number.

123660133 is a deficient number, since it is larger than the sum of its proper divisors (144155).

123660133 is an equidigital number, since it uses as much as digits as its factorization.

123660133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144154.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 123660133 is about 11120.2577757892. The cubic root of 123660133 is about 498.2070892935.

The spelling of 123660133 in words is "one hundred twenty-three million, six hundred sixty thousand, one hundred thirty-three".