124729 has 16 divisors (see below), whose sum is σ = 155520. Its totient is φ = 98560.

The previous prime is 124721. The next prime is 124739. The reversal of 124729 is 927421.

It is not a de Polignac number, because 124729 - 2³ = 124721 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 2 + 7⁶ + 4 + 2⁹ + 9⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124721) 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 15 ways as a sum of consecutive naturals, for example, 4287 + ... + 4315.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2¹²⁴⁷²⁹ is an apocalyptic number.

It is an amenable number.

124729 is a deficient number, since it is larger than the sum of its proper divisors (30791).

124729 is a wasteful number, since it uses less digits than its factorization.

124729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80.

The product of its digits is 1008, while the sum is 25.

The square root of 124729 is about 353.1699307699. The cubic root of 124729 is about 49.9638405228.

It can be divided in two parts, 1247 and 29, that multiplied together give a palindrome (36163).

The spelling of 124729 in words is "one hundred twenty-four thousand, seven hundred twenty-nine".