124745 has 8 divisors (see below), whose sum is σ = 152520. Its totient is φ = 97920.

The previous prime is 124739. The next prime is 124753. The reversal of 124745 is 547421.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 116281 = 92^2 + 341^2 .

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

It is not a de Polignac number, because 124745 - 2⁸ = 124489 is a prime.

It is a super-2 number, since 2×124745² = 31122630050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124745.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 509.

It is an arithmetic number, because the mean of its divisors is an integer number (19065).

2¹²⁴⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

124745 is a deficient number, since it is larger than the sum of its proper divisors (27775).

124745 is an equidigital number, since it uses as much as digits as its factorization.

124745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its digits is 1120, while the sum is 23.

The square root of 124745 is about 353.1925820286. The cubic root of 124745 is about 49.9659768538.

The spelling of 124745 in words is "one hundred twenty-four thousand, seven hundred forty-five".