124855 has 4 divisors (see below), whose sum is σ = 149832. Its totient is φ = 99880.

The previous prime is 124853. The next prime is 124897. The reversal of 124855 is 558421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 124855 - 2¹ = 124853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12481 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (37458).

2¹²⁴⁸⁵⁵ is an apocalyptic number.

124855 is a deficient number, since it is larger than the sum of its proper divisors (24977).

124855 is an equidigital number, since it uses as much as digits as its factorization.

124855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24976.

The product of its digits is 1600, while the sum is 25.

The square root of 124855 is about 353.3482701245. The cubic root of 124855 is about 49.9806591863.

It can be divided in two parts, 124 and 855, that added together give a palindrome (979).

The spelling of 124855 in words is "one hundred twenty-four thousand, eight hundred fifty-five".