124581 has 8 divisors (see below), whose sum is σ = 167904. Its totient is φ = 82160.

The previous prime is 124577. The next prime is 124601. The reversal of 124581 is 185421.

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

It is a cyclic number.

It is not a de Polignac number, because 124581 - 2² = 124577 is a prime.

It is a super-2 number, since 2×124581² = 31040851122, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124541) 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, 235 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (20988).

2¹²⁴⁵⁸¹ is an apocalyptic number.

It is an amenable number.

124581 is a deficient number, since it is larger than the sum of its proper divisors (43323).

124581 is a wasteful number, since it uses less digits than its factorization.

124581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 320, while the sum is 21.

The square root of 124581 is about 352.9603377152. The cubic root of 124581 is about 49.9440707951.

It can be divided in two parts, 1245 and 81, that added together give a triangular number (1326 = T₅₁).

The spelling of 124581 in words is "one hundred twenty-four thousand, five hundred eighty-one".