124521617 has 16 divisors (see below), whose sum is σ = 145670400. Its totient is φ = 105181440.

The previous prime is 124521569. The next prime is 124521641. The reversal of 124521617 is 716125421.

It is a cyclic number.

It is not a de Polignac number, because 124521617 - 2⁸ = 124521361 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 124521617.

It is not an unprimeable number, because it can be changed into a prime (124521647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10559 + ... + 18987.

It is an arithmetic number, because the mean of its divisors is an integer number (9104400).

Almost surely, 2^124521617 is an apocalyptic number.

124521617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

124521617 is a deficient number, since it is larger than the sum of its proper divisors (21148783).

124521617 is a wasteful number, since it uses less digits than its factorization.

124521617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536.

The product of its digits is 3360, while the sum is 29.

The square root of 124521617 is about 11158.9254410987. The cubic root of 124521617 is about 499.3613405756.

The spelling of 124521617 in words is "one hundred twenty-four million, five hundred twenty-one thousand, six hundred seventeen".