124609513 has 4 divisors (see below), whose sum is σ = 142410880. Its totient is φ = 106808148.

The previous prime is 124609493. The next prime is 124609517. The reversal of 124609513 is 315906421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315906421 = 499 ⋅633079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124609513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124609517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8900673 + ... + 8900686.

It is an arithmetic number, because the mean of its divisors is an integer number (35602720).

Almost surely, 2^124609513 is an apocalyptic number.

It is an amenable number.

124609513 is a deficient number, since it is larger than the sum of its proper divisors (17801367).

124609513 is an equidigital number, since it uses as much as digits as its factorization.

124609513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17801366.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 124609513 is about 11162.8631183940. The cubic root of 124609513 is about 499.4788075723.

The spelling of 124609513 in words is "one hundred twenty-four million, six hundred nine thousand, five hundred thirteen".