506864042 has 4 divisors (see below), whose sum is σ = 760296066. Its totient is φ = 253432020.

The previous prime is 506864011. The next prime is 506864047. The reversal of 506864042 is 240468605.

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., 467035321 + 39828721 = 21611^2 + 6311^2 .

It is a super-2 number, since 2×506864042² = 513822314145155528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506863993 and 506864011.

It is not an unprimeable number, because it can be changed into a prime (506864047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126716009 + ... + 126716012.

Almost surely, 2^506864042 is an apocalyptic number.

506864042 is a deficient number, since it is larger than the sum of its proper divisors (253432024).

506864042 is a wasteful number, since it uses less digits than its factorization.

506864042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253432023.

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

The square root of 506864042 is about 22513.6412425889. The cubic root of 506864042 is about 797.3160273083.

The spelling of 506864042 in words is "five hundred six million, eight hundred sixty-four thousand, forty-two".