306142285 has 8 divisors (see below), whose sum is σ = 376331256. Its totient is φ = 238940160.

The previous prime is 306142279. The next prime is 306142297. The reversal of 306142285 is 582241603.

It can be written as a sum of positive squares in 4 ways, for example, as 29452329 + 276689956 = 5427^2 + 16634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 306142285 - 2⁵ = 306142253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746484 + ... + 746893.

It is an arithmetic number, because the mean of its divisors is an integer number (47041407).

Almost surely, 2^306142285 is an apocalyptic number.

It is an amenable number.

306142285 is a deficient number, since it is larger than the sum of its proper divisors (70188971).

306142285 is a wasteful number, since it uses less digits than its factorization.

306142285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493423.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 306142285 is about 17496.9221579111. The cubic root of 306142285 is about 673.9708395195.

Adding to 306142285 its reverse (582241603), we get a palindrome (888383888).

The spelling of 306142285 in words is "three hundred six million, one hundred forty-two thousand, two hundred eighty-five".