1242060517 has 4 divisors (see below), whose sum is σ = 1284890220. Its totient is φ = 1199230816.

The previous prime is 1242060509. The next prime is 1242060527. The reversal of 1242060517 is 7150602421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 797441121 + 444619396 = 28239^2 + 21086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242060517 - 2³ = 1242060509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242060527) 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 3 ways as a sum of consecutive naturals, for example, 21414808 + ... + 21414865.

It is an arithmetic number, because the mean of its divisors is an integer number (321222555).

Almost surely, 2^1242060517 is an apocalyptic number.

It is an amenable number.

1242060517 is a deficient number, since it is larger than the sum of its proper divisors (42829703).

1242060517 is an equidigital number, since it uses as much as digits as its factorization.

1242060517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42829702.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1242060517 is about 35242.8789544782. The cubic root of 1242060517 is about 1074.9318195807.

Adding to 1242060517 its reverse (7150602421), we get a palindrome (8392662938).

The spelling of 1242060517 in words is "one billion, two hundred forty-two million, sixty thousand, five hundred seventeen".