120205513 has 4 divisors (see below), whose sum is σ = 121001728. Its totient is φ = 119409300.

The previous prime is 120205499. The next prime is 120205517. The reversal of 120205513 is 315502021.

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: 315502021 = 13093 ⋅24097.

It is a cyclic number.

It is not a de Polignac number, because 120205513 - 2¹⁷ = 120074441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120205517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397881 + ... + 398182.

It is an arithmetic number, because the mean of its divisors is an integer number (30250432).

Almost surely, 2^120205513 is an apocalyptic number.

It is an amenable number.

120205513 is a deficient number, since it is larger than the sum of its proper divisors (796215).

120205513 is an equidigital number, since it uses as much as digits as its factorization.

120205513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796214.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 120205513 is about 10963.8274794891. The cubic root of 120205513 is about 493.5238312985.

Adding to 120205513 its reverse (315502021), we get a palindrome (435707534).

The spelling of 120205513 in words is "one hundred twenty million, two hundred five thousand, five hundred thirteen".