123768506 has 8 divisors (see below), whose sum is σ = 185705460. Its totient is φ = 61866688.

The previous prime is 123768503. The next prime is 123768511. The reversal of 123768506 is 605867321.

It can be written as a sum of positive squares in 2 ways, for example, as 110145025 + 13623481 = 10495^2 + 3691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123768506.

It is not an unprimeable number, because it can be changed into a prime (123768503) 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, 3410 + ... + 16098.

Almost surely, 2^123768506 is an apocalyptic number.

123768506 is a deficient number, since it is larger than the sum of its proper divisors (61936954).

123768506 is a wasteful number, since it uses less digits than its factorization.

123768506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17568.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 123768506 is about 11125.1294823926. The cubic root of 123768506 is about 498.3525860157.

The spelling of 123768506 in words is "one hundred twenty-three million, seven hundred sixty-eight thousand, five hundred six".