342302221 has 4 divisors (see below), whose sum is σ = 342593244. Its totient is φ = 342011200.

The previous prime is 342302203. The next prime is 342302227. The reversal of 342302221 is 122203243.

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 305760196 + 36542025 = 17486^2 + 6045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342302221 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 (342302227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143740 + ... + 146101.

It is an arithmetic number, because the mean of its divisors is an integer number (85648311).

Almost surely, 2^342302221 is an apocalyptic number.

It is an amenable number.

342302221 is a deficient number, since it is larger than the sum of its proper divisors (291023).

342302221 is a wasteful number, since it uses less digits than its factorization.

342302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291022.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 342302221 is about 18501.4113245449. The cubic root of 342302221 is about 699.5249981571.

Adding to 342302221 its reverse (122203243), we get a palindrome (464505464).

The spelling of 342302221 in words is "three hundred forty-two million, three hundred two thousand, two hundred twenty-one".