124723 has 4 divisors (see below), whose sum is σ = 125568. Its totient is φ = 123880.

The previous prime is 124721. The next prime is 124739. The reversal of 124723 is 327421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 124723 - 2¹ = 124721 is a prime.

It is a d-powerful number, because it can be written as 1 + 2 + 7 + 4⁸ + 2⁷ + 3¹⁰ .

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 124723.

It is not an unprimeable number, because it can be changed into a prime (124721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (31392).

2¹²⁴⁷²³ is an apocalyptic number.

124723 is a deficient number, since it is larger than the sum of its proper divisors (845).

124723 is an equidigital number, since it uses as much as digits as its factorization.

124723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844.

The product of its digits is 336, while the sum is 19.

The square root of 124723 is about 353.1614361733. The cubic root of 124723 is about 49.9630393516.

The spelling of 124723 in words is "one hundred twenty-four thousand, seven hundred twenty-three", and thus it is an iban number.