306968242 has 12 divisors (see below), whose sum is σ = 535628430. Its totient is φ = 131557776.

The previous prime is 306968227. The next prime is 306968251. The reversal of 306968242 is 242869603.

It can be written as a sum of positive squares in only one way, i.e., 256288081 + 50680161 = 16009^2 + 7119^2 .

It is a junction number, because it is equal to n+sod(n) for n = 306968195 and 306968204.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1566067 + ... + 1566262.

Almost surely, 2^306968242 is an apocalyptic number.

306968242 is a deficient number, since it is larger than the sum of its proper divisors (228660188).

306968242 is a wasteful number, since it uses less digits than its factorization.

306968242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132345 (or 3132338 counting only the distinct ones).

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

The square root of 306968242 is about 17520.5091820986. The cubic root of 306968242 is about 674.5764087654.

The spelling of 306968242 in words is "three hundred six million, nine hundred sixty-eight thousand, two hundred forty-two".