124381 has 4 divisors (see below), whose sum is σ = 128700. Its totient is φ = 120064.

The previous prime is 124367. The next prime is 124427. The reversal of 124381 is 183421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183421 = 7 ⋅26203.

It can be written as a sum of positive squares in 2 ways, for example, as 95481 + 28900 = 309^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 124381 - 2⁵ = 124349 is a prime.

It is a super-2 number, since 2×124381² = 30941266322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124301) 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, 2116 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (32175).

2¹²⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

124381 is a deficient number, since it is larger than the sum of its proper divisors (4319).

124381 is an equidigital number, since it uses as much as digits as its factorization.

124381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318.

The product of its digits is 192, while the sum is 19.

The square root of 124381 is about 352.6769059635. The cubic root of 124381 is about 49.9173300556.

It can be divided in two parts, 124 and 381, that added together give a palindrome (505).

The spelling of 124381 in words is "one hundred twenty-four thousand, three hundred eighty-one".