124779 has 4 divisors (see below), whose sum is σ = 166376. Its totient is φ = 83184.

The previous prime is 124777. The next prime is 124781. The reversal of 124779 is 977421.

124779 = T₁₆₂ + T₁₆₃ + ... + T₁₇₀.

124779 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977421 = 3 ⋅325807.

It is an interprime number because it is at equal distance from previous prime (124777) and next prime (124781).

It is not a de Polignac number, because 124779 - 2¹ = 124777 is a prime.

It is a D-number.

It is a Duffinian number.

124779 is strictly pandigital in base 7.

It is a plaindrome in base 10 and base 14.

It is not an unprimeable number, because it can be changed into a prime (124771) 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, 20794 + ... + 20799.

It is an arithmetic number, because the mean of its divisors is an integer number (41594).

2¹²⁴⁷⁷⁹ is an apocalyptic number.

124779 is a deficient number, since it is larger than the sum of its proper divisors (41597).

124779 is an equidigital number, since it uses as much as digits as its factorization.

124779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41596.

The product of its digits is 3528, while the sum is 30.

The square root of 124779 is about 353.2407111305. The cubic root of 124779 is about 49.9705159506.

It can be divided in two parts, 1247 and 79, that added together give a triangular number (1326 = T₅₁).

The spelling of 124779 in words is "one hundred twenty-four thousand, seven hundred seventy-nine".