306290806042 has 24 divisors (see below), whose sum is σ = 511252917588. Its totient is φ = 136804815360.

The previous prime is 306290806039. The next prime is 306290806093. The reversal of 306290806042 is 240608092603.

It can be written as a sum of positive squares in 2 ways, for example, as 300085935601 + 6204870441 = 547801^2 + 78771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 306290805986 and 306290806004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6104263 + ... + 6154234.

Almost surely, 2^306290806042 is an apocalyptic number.

306290806042 is a deficient number, since it is larger than the sum of its proper divisors (204962111546).

306290806042 is a wasteful number, since it uses less digits than its factorization.

306290806042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12258574 (or 12258543 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

Adding to 306290806042 its reverse (240608092603), we get a palindrome (546898898645).

The spelling of 306290806042 in words is "three hundred six billion, two hundred ninety million, eight hundred six thousand, forty-two".