124705 has 12 divisors (see below), whose sum is σ = 174420. Its totient is φ = 85344.

The previous prime is 124703. The next prime is 124717. The reversal of 124705 is 507421.

It can be written as a sum of positive squares in 2 ways, for example, as 74529 + 50176 = 273^2 + 224^2 .

It is not a de Polignac number, because 124705 - 2¹ = 124703 is a prime.

It is an Ulam 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 11 ways as a sum of consecutive naturals, for example, 10 + ... + 499.

It is an arithmetic number, because the mean of its divisors is an integer number (14535).

2¹²⁴⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

124705 is a deficient number, since it is larger than the sum of its proper divisors (49715).

124705 is an equidigital number, since it uses as much as digits as its factorization.

124705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 124705 is about 353.1359511576. The cubic root of 124705 is about 49.9606356838.

The spelling of 124705 in words is "one hundred twenty-four thousand, seven hundred five".