123789723 has 8 divisors (see below), whose sum is σ = 165120000. Its totient is φ = 82492968.

The previous prime is 123789713. The next prime is 123789737. The reversal of 123789723 is 327987321.

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

It is not a de Polignac number, because 123789723 - 2¹⁰ = 123788699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123789713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2118 + ... + 15876.

It is an arithmetic number, because the mean of its divisors is an integer number (20640000).

Almost surely, 2^123789723 is an apocalyptic number.

123789723 is a deficient number, since it is larger than the sum of its proper divisors (41330277).

123789723 is a wasteful number, since it uses less digits than its factorization.

123789723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16761.

The product of its digits is 127008, while the sum is 42.

The square root of 123789723 is about 11126.0830034653. The cubic root of 123789723 is about 498.3810610644.

The spelling of 123789723 in words is "one hundred twenty-three million, seven hundred eighty-nine thousand, seven hundred twenty-three".