302342021 has 4 divisors (see below), whose sum is σ = 302835852. Its totient is φ = 301848192.

The previous prime is 302342011. The next prime is 302342083. The reversal of 302342021 is 120243203.

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 101808100 + 200533921 = 10090^2 + 14161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302342021 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 (302342011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245996 + ... + 247221.

It is an arithmetic number, because the mean of its divisors is an integer number (75708963).

Almost surely, 2^302342021 is an apocalyptic number.

It is an amenable number.

302342021 is a deficient number, since it is larger than the sum of its proper divisors (493831).

302342021 is an equidigital number, since it uses as much as digits as its factorization.

302342021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493830.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 302342021 is about 17387.9849608861. The cubic root of 302342021 is about 671.1704653733.

Adding to 302342021 its reverse (120243203), we get a palindrome (422585224).

The spelling of 302342021 in words is "three hundred two million, three hundred forty-two thousand, twenty-one".