127723 has 4 divisors (see below), whose sum is σ = 128440. Its totient is φ = 127008.

The previous prime is 127717. The next prime is 127727. The reversal of 127723 is 327721.

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 5-Lehmer number, since φ(127723) divides (127723-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 127723 - 2⁵ = 127691 is a prime.

It is a Duffinian number.

127723 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 127694 and 127703.

It is not an unprimeable number, because it can be changed into a prime (127727) 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, 148 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (32110).

2¹²⁷⁷²³ is an apocalyptic number.

127723 is a deficient number, since it is larger than the sum of its proper divisors (717).

127723 is an equidigital number, since it uses as much as digits as its factorization.

127723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 588, while the sum is 22.

The square root of 127723 is about 357.3835474669. The cubic root of 127723 is about 50.3604617682.

The spelling of 127723 in words is "one hundred twenty-seven thousand, seven hundred twenty-three", and thus it is an iban number.