306142661 has 8 divisors (see below), whose sum is σ = 335409984. Its totient is φ = 277114720.

The previous prime is 306142657. The next prime is 306142679. The reversal of 306142661 is 166241603.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 306142661 - 2² = 306142657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306142061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57161 + ... + 62286.

It is an arithmetic number, because the mean of its divisors is an integer number (41926248).

Almost surely, 2^306142661 is an apocalyptic number.

It is an amenable number.

306142661 is a deficient number, since it is larger than the sum of its proper divisors (29267323).

306142661 is a wasteful number, since it uses less digits than its factorization.

306142661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119691.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 306142661 is about 17496.9329026547. The cubic root of 306142661 is about 673.9711154401.

The spelling of 306142661 in words is "three hundred six million, one hundred forty-two thousand, six hundred sixty-one".