531684242 has 8 divisors (see below), whose sum is σ = 801933132. Its totient is φ = 264373200.

The previous prime is 531684229. The next prime is 531684247. The reversal of 531684242 is 242486135.

It can be written as a sum of positive squares in 2 ways, for example, as 518427361 + 13256881 = 22769^2 + 3641^2 .

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

It is a super-2 number, since 2×531684242² = 565376266382229128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531684247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734009 + ... + 734732.

Almost surely, 2^531684242 is an apocalyptic number.

531684242 is a deficient number, since it is larger than the sum of its proper divisors (270248890).

531684242 is a wasteful number, since it uses less digits than its factorization.

531684242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468924.

The product of its digits is 46080, while the sum is 35.

The square root of 531684242 is about 23058.2792506293. The cubic root of 531684242 is about 810.1235608894.

The spelling of 531684242 in words is "five hundred thirty-one million, six hundred eighty-four thousand, two hundred forty-two".