123944605 has 8 divisors (see below), whose sum is σ = 149184864. Its totient is φ = 98854800.

The previous prime is 123944531. The next prime is 123944609. The reversal of 123944605 is 506449321.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-123944605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123944609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35791 + ... + 39100.

It is an arithmetic number, because the mean of its divisors is an integer number (18648108).

Almost surely, 2^123944605 is an apocalyptic number.

It is an amenable number.

123944605 is a deficient number, since it is larger than the sum of its proper divisors (25240259).

123944605 is an equidigital number, since it uses as much as digits as its factorization.

123944605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75227.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 123944605 is about 11133.0411388802. The cubic root of 123944605 is about 498.5888275985.

The spelling of 123944605 in words is "one hundred twenty-three million, nine hundred forty-four thousand, six hundred five".