124047521 has 12 divisors (see below), whose sum is σ = 142228332. Its totient is φ = 107767296.

The previous prime is 124047503. The next prime is 124047563. The reversal of 124047521 is 125740421.

It can be written as a sum of positive squares in 6 ways, for example, as 4363921 + 119683600 = 2089^2 + 10940^2 .

It is not a de Polignac number, because 124047521 - 2⁶ = 124047457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124047571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18716 + ... + 24461.

It is an arithmetic number, because the mean of its divisors is an integer number (11852361).

Almost surely, 2^124047521 is an apocalyptic number.

It is an amenable number.

124047521 is a deficient number, since it is larger than the sum of its proper divisors (18180811).

124047521 is a wasteful number, since it uses less digits than its factorization.

124047521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43220 (or 43207 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 124047521 is about 11137.6622771567. The cubic root of 124047521 is about 498.7267886175.

Adding to 124047521 its reverse (125740421), we get a palindrome (249787942).

The spelling of 124047521 in words is "one hundred twenty-four million, forty-seven thousand, five hundred twenty-one".