538831242 has 24 divisors (see below), whose sum is σ = 1178382816. Its totient is φ = 177931176.

The previous prime is 538831199. The next prime is 538831253. The reversal of 538831242 is 242138835.

538831242 is a `hidden beast` number, since 5 + 388 + 31 + 242 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 538831197 and 538831206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137958 + ... + 141809.

It is an arithmetic number, because the mean of its divisors is an integer number (49099284).

Almost surely, 2^538831242 is an apocalyptic number.

538831242 is an abundant number, since it is smaller than the sum of its proper divisors (639551574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

538831242 is a wasteful number, since it uses less digits than its factorization.

538831242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279882 (or 279879 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 538831242 is about 23212.7387871401. The cubic root of 538831242 is about 813.7373611124.

The spelling of 538831242 in words is "five hundred thirty-eight million, eight hundred thirty-one thousand, two hundred forty-two".