124306021 has 8 divisors (see below), whose sum is σ = 142185024. Its totient is φ = 106457280.

The previous prime is 124305997. The next prime is 124306027. The reversal of 124306021 is 120603421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124306021 - 2¹⁷ = 124174949 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 124306021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124306027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061 + ... + 15901.

It is an arithmetic number, because the mean of its divisors is an integer number (17773128).

Almost surely, 2^124306021 is an apocalyptic number.

It is an amenable number.

124306021 is a deficient number, since it is larger than the sum of its proper divisors (17879003).

124306021 is a wasteful number, since it uses less digits than its factorization.

124306021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15131.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 124306021 is about 11149.2610069009. The cubic root of 124306021 is about 499.0729769855.

Adding to 124306021 its reverse (120603421), we get a palindrome (244909442).

The spelling of 124306021 in words is "one hundred twenty-four million, three hundred six thousand, twenty-one".