528713242 has 4 divisors (see below), whose sum is σ = 793069866. Its totient is φ = 264356620.

The previous prime is 528713233. The next prime is 528713257. The reversal of 528713242 is 242317825.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 345625281 + 183087961 = 18591^2 + 13531^2 .

It is a junction number, because it is equal to n+sod(n) for n = 528713198 and 528713207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132178309 + ... + 132178312.

Almost surely, 2^528713242 is an apocalyptic number.

528713242 is a deficient number, since it is larger than the sum of its proper divisors (264356624).

528713242 is a wasteful number, since it uses less digits than its factorization.

528713242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264356623.

The product of its digits is 26880, while the sum is 34.

The square root of 528713242 is about 22993.7652853986. The cubic root of 528713242 is about 808.6117775097.

The spelling of 528713242 in words is "five hundred twenty-eight million, seven hundred thirteen thousand, two hundred forty-two".