8442513 has 6 divisors (see below), whose sum is σ = 12194754. Its totient is φ = 5628336.

The previous prime is 8442481. The next prime is 8442521. The reversal of 8442513 is 3152448.

8442513 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in only one way, i.e., 6110784 + 2331729 = 2472^2 + 1527^2 .

It is not a de Polignac number, because 8442513 - 2⁵ = 8442481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8442713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 469020 + ... + 469037.

It is an arithmetic number, because the mean of its divisors is an integer number (2032459).

Almost surely, 2^8442513 is an apocalyptic number.

It is an amenable number.

8442513 is a deficient number, since it is larger than the sum of its proper divisors (3752241).

8442513 is a wasteful number, since it uses less digits than its factorization.

8442513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938063 (or 938060 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 8442513 is about 2905.6002822136. The cubic root of 8442513 is about 203.6216314121.

The spelling of 8442513 in words is "eight million, four hundred forty-two thousand, five hundred thirteen".