124006521 has 8 divisors (see below), whose sum is σ = 174044320. Its totient is φ = 78319872.

The previous prime is 124006513. The next prime is 124006543. The reversal of 124006521 is 125600421.

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

It is not a de Polignac number, because 124006521 - 2³ = 124006513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124006021) 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, 1087720 + ... + 1087833.

It is an arithmetic number, because the mean of its divisors is an integer number (21755540).

Almost surely, 2^124006521 is an apocalyptic number.

It is an amenable number.

124006521 is a deficient number, since it is larger than the sum of its proper divisors (50037799).

124006521 is a wasteful number, since it uses less digits than its factorization.

124006521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175575.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 124006521 is about 11135.8215233543. The cubic root of 124006521 is about 498.6718364202.

Adding to 124006521 its reverse (125600421), we get a palindrome (249606942).

The spelling of 124006521 in words is "one hundred twenty-four million, six thousand, five hundred twenty-one".