124531 has 4 divisors (see below), whose sum is σ = 135864. Its totient is φ = 113200.

The previous prime is 124529. The next prime is 124541. The reversal of 124531 is 135421.

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

It is a cyclic number.

It is not a de Polignac number, because 124531 - 2¹ = 124529 is a prime.

It is a super-2 number, since 2×124531² = 31015939922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (124541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5650 + ... + 5671.

It is an arithmetic number, because the mean of its divisors is an integer number (33966).

2¹²⁴⁵³¹ is an apocalyptic number.

124531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

124531 is a deficient number, since it is larger than the sum of its proper divisors (11333).

124531 is a wasteful number, since it uses less digits than its factorization.

124531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11332.

The product of its digits is 120, while the sum is 16.

The square root of 124531 is about 352.8895011190. The cubic root of 124531 is about 49.9373882949.

Adding to 124531 its reverse (135421), we get a palindrome (259952).

The spelling of 124531 in words is "one hundred twenty-four thousand, five hundred thirty-one".