302420402173 has 2 divisors, whose sum is σ = 302420402174. Its totient is φ = 302420402172.

The previous prime is 302420402161. The next prime is 302420402201. The reversal of 302420402173 is 371204024203.

It is an a-pointer prime, because the next prime (302420402201) can be obtained adding 302420402173 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252946631844 + 49473770329 = 502938^2 + 222427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302420402173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302420402153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151210201086 + 151210201087.

It is an arithmetic number, because the mean of its divisors is an integer number (151210201087).

Almost surely, 2^302420402173 is an apocalyptic number.

It is an amenable number.

302420402173 is a deficient number, since it is larger than the sum of its proper divisors (1).

302420402173 is an equidigital number, since it uses as much as digits as its factorization.

302420402173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 302420402173 its reverse (371204024203), we get a palindrome (673624426376).

The spelling of 302420402173 in words is "three hundred two billion, four hundred twenty million, four hundred two thousand, one hundred seventy-three".