305212042 has 4 divisors (see below), whose sum is σ = 457818066. Its totient is φ = 152606020.

The previous prime is 305212021. The next prime is 305212057. The reversal of 305212042 is 240212503.

305212042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 159744321 + 145467721 = 12639^2 + 12061^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76303009 + ... + 76303012.

Almost surely, 2^305212042 is an apocalyptic number.

305212042 is a deficient number, since it is larger than the sum of its proper divisors (152606024).

305212042 is a wasteful number, since it uses less digits than its factorization.

305212042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152606023.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 305212042 is about 17470.3188866145. The cubic root of 305212042 is about 673.2875050228.

Adding to 305212042 its reverse (240212503), we get a palindrome (545424545).

The spelling of 305212042 in words is "three hundred five million, two hundred twelve thousand, forty-two".