528128242 has 8 divisors (see below), whose sum is σ = 794437596. Its totient is φ = 263315712.

The previous prime is 528128221. The next prime is 528128243. The reversal of 528128242 is 242821825.

It can be written as a sum of positive squares in 2 ways, for example, as 519885601 + 8242641 = 22801^2 + 2871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 528128198 and 528128207.

It is not an unprimeable number, because it can be changed into a prime (528128243) 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, 373323 + ... + 374734.

Almost surely, 2^528128242 is an apocalyptic number.

528128242 is a deficient number, since it is larger than the sum of its proper divisors (266309354).

528128242 is a wasteful number, since it uses less digits than its factorization.

528128242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748412.

The product of its digits is 20480, while the sum is 34.

The square root of 528128242 is about 22981.0409250756. The cubic root of 528128242 is about 808.3134352797.

It can be divided in two parts, 528 and 128242, that multiplied together give a palindrome (67711776).

The spelling of 528128242 in words is "five hundred twenty-eight million, one hundred twenty-eight thousand, two hundred forty-two".