124811 has 4 divisors (see below), whose sum is σ = 131400. Its totient is φ = 118224.

The previous prime is 124799. The next prime is 124819. The reversal of 124811 is 118421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118421 = 79 ⋅1499.

It is a cyclic number.

It is not a de Polignac number, because 124811 - 2¹⁰ = 123787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124811.

It is not an unprimeable number, because it can be changed into a prime (124819) 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, 3266 + ... + 3303.

It is an arithmetic number, because the mean of its divisors is an integer number (32850).

2¹²⁴⁸¹¹ is an apocalyptic number.

124811 is a deficient number, since it is larger than the sum of its proper divisors (6589).

124811 is an equidigital number, since it uses as much as digits as its factorization.

124811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588.

The product of its digits is 64, while the sum is 17.

The square root of 124811 is about 353.2860031193. The cubic root of 124811 is about 49.9747872885.

The spelling of 124811 in words is "one hundred twenty-four thousand, eight hundred eleven".