234642985 has 4 divisors (see below), whose sum is σ = 281571588. Its totient is φ = 187714384.

The previous prime is 234642979. The next prime is 234642997. The reversal of 234642985 is 589246432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43401744 + 191241241 = 6588^2 + 13829^2 .

It is a cyclic number.

It is not a de Polignac number, because 234642985 - 2¹³ = 234634793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23464294 + ... + 23464303.

It is an arithmetic number, because the mean of its divisors is an integer number (70392897).

Almost surely, 2^234642985 is an apocalyptic number.

It is an amenable number.

234642985 is a deficient number, since it is larger than the sum of its proper divisors (46928603).

234642985 is an equidigital number, since it uses as much as digits as its factorization.

234642985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46928602.

The product of its digits is 414720, while the sum is 43.

The square root of 234642985 is about 15318.0607454077. The cubic root of 234642985 is about 616.7879185321.

The spelling of 234642985 in words is "two hundred thirty-four million, six hundred forty-two thousand, nine hundred eighty-five".