120509513 has 2 divisors, whose sum is σ = 120509514. Its totient is φ = 120509512.

The previous prime is 120509491. The next prime is 120509527. The reversal of 120509513 is 315905021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105431824 + 15077689 = 10268^2 + 3883^2 .

It is an emirp because it is prime and its reverse (315905021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120509513 - 2¹² = 120505417 is a prime.

It is not a weakly prime, because it can be changed into another prime (120509593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60254756 + 60254757.

It is an arithmetic number, because the mean of its divisors is an integer number (60254757).

Almost surely, 2^120509513 is an apocalyptic number.

It is an amenable number.

120509513 is a deficient number, since it is larger than the sum of its proper divisors (1).

120509513 is an equidigital number, since it uses as much as digits as its factorization.

120509513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 120509513 is about 10977.6824967750. The cubic root of 120509513 is about 493.9395220100.

The spelling of 120509513 in words is "one hundred twenty million, five hundred nine thousand, five hundred thirteen".