539939042 has 4 divisors (see below), whose sum is σ = 809908566. Its totient is φ = 269969520.

The previous prime is 539939033. The next prime is 539939047. The reversal of 539939042 is 240939935.

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., 539214841 + 724201 = 23221^2 + 851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 539938984 and 539939002.

It is not an unprimeable number, because it can be changed into a prime (539939047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134984759 + ... + 134984762.

Almost surely, 2^539939042 is an apocalyptic number.

539939042 is a deficient number, since it is larger than the sum of its proper divisors (269969524).

539939042 is a wasteful number, since it uses less digits than its factorization.

539939042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269969523.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 539939042 is about 23236.5884329004. The cubic root of 539939042 is about 814.2946420719.

The spelling of 539939042 in words is "five hundred thirty-nine million, nine hundred thirty-nine thousand, forty-two".