124042517 has 2 divisors, whose sum is σ = 124042518. Its totient is φ = 124042516.

The previous prime is 124042493. The next prime is 124042547. The reversal of 124042517 is 715240421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119552356 + 4490161 = 10934^2 + 2119^2 .

It is a cyclic number.

It is not a de Polignac number, because 124042517 - 2¹⁰ = 124041493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124042547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62021258 + 62021259.

It is an arithmetic number, because the mean of its divisors is an integer number (62021259).

Almost surely, 2^124042517 is an apocalyptic number.

It is an amenable number.

124042517 is a deficient number, since it is larger than the sum of its proper divisors (1).

124042517 is an equidigital number, since it uses as much as digits as its factorization.

124042517 is an odious number, because the sum of its binary digits is odd.

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

The square root of 124042517 is about 11137.4376316997. The cubic root of 124042517 is about 498.7200824176.

Adding to 124042517 its reverse (715240421), we get a palindrome (839282938).

The spelling of 124042517 in words is "one hundred twenty-four million, forty-two thousand, five hundred seventeen".