120242513 has 4 divisors (see below), whose sum is σ = 127315620. Its totient is φ = 113169408.

The previous prime is 120242483. The next prime is 120242519. The reversal of 120242513 is 315242021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315242021 = 4357 ⋅72353.

It can be written as a sum of positive squares in 2 ways, for example, as 74097664 + 46144849 = 8608^2 + 6793^2 .

It is not a de Polignac number, because 120242513 - 2⁸ = 120242257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120242519) 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, 3536528 + ... + 3536561.

It is an arithmetic number, because the mean of its divisors is an integer number (31828905).

Almost surely, 2^120242513 is an apocalyptic number.

It is an amenable number.

120242513 is a deficient number, since it is larger than the sum of its proper divisors (7073107).

120242513 is an equidigital number, since it uses as much as digits as its factorization.

120242513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073106.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 120242513 is about 10965.5147166013. The cubic root of 120242513 is about 493.5744626660.

Adding to 120242513 its reverse (315242021), we get a palindrome (435484534).

The spelling of 120242513 in words is "one hundred twenty million, two hundred forty-two thousand, five hundred thirteen".