124557 has 4 divisors (see below), whose sum is σ = 166080. Its totient is φ = 83036.

The previous prime is 124543. The next prime is 124561. The reversal of 124557 is 755421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124557 - 2⁴ = 124541 is a prime.

It is a D-number.

124557 is a lucky number.

It is a plaindrome in base 10 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124567) 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, 20757 + ... + 20762.

It is an arithmetic number, because the mean of its divisors is an integer number (41520).

2¹²⁴⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

124557 is a deficient number, since it is larger than the sum of its proper divisors (41523).

124557 is an equidigital number, since it uses as much as digits as its factorization.

124557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41522.

The product of its digits is 1400, while the sum is 24.

The square root of 124557 is about 352.9263379234. The cubic root of 124557 is about 49.9408634182.

Adding to 124557 its reverse (755421), we get a palindrome (879978).

The spelling of 124557 in words is "one hundred twenty-four thousand, five hundred fifty-seven".