306678142 has 4 divisors (see below), whose sum is σ = 460017216. Its totient is φ = 153339070.

The previous prime is 306678139. The next prime is 306678179. The reversal of 306678142 is 241876603.

306678142 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, and also an emirpimes, since its reverse is a distinct semiprime: 241876603 = 107 ⋅2260529.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76669534 + ... + 76669537.

It is an arithmetic number, because the mean of its divisors is an integer number (115004304).

Almost surely, 2^306678142 is an apocalyptic number.

306678142 is a deficient number, since it is larger than the sum of its proper divisors (153339074).

306678142 is a wasteful number, since it uses less digits than its factorization.

306678142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153339073.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 306678142 is about 17512.2283562087. The cubic root of 306678142 is about 674.3638392237.

It can be divided in two parts, 30667 and 8142, that added together give a square (38809 = 197²).

The spelling of 306678142 in words is "three hundred six million, six hundred seventy-eight thousand, one hundred forty-two".