124709 has 8 divisors (see below), whose sum is σ = 137592. Its totient is φ = 112320.

The previous prime is 124703. The next prime is 124717. The reversal of 124709 is 907421.

It can be written as a sum of positive squares in 4 ways, for example, as 100 + 124609 = 10^2 + 353^2 .

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

It is not a de Polignac number, because 124709 - 2⁴ = 124693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124703) 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, 599 + ... + 779.

It is an arithmetic number, because the mean of its divisors is an integer number (17199).

2¹²⁴⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

124709 is a deficient number, since it is larger than the sum of its proper divisors (12883).

124709 is a wasteful number, since it uses less digits than its factorization.

124709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 124709 is about 353.1416146534. The cubic root of 124709 is about 49.9611698522.

The spelling of 124709 in words is "one hundred twenty-four thousand, seven hundred nine".