302026421 has 2 divisors, whose sum is σ = 302026422. Its totient is φ = 302026420.

The previous prime is 302026411. The next prime is 302026423. The reversal of 302026421 is 124620203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243672100 + 58354321 = 15610^2 + 7639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302026421 is a prime.

It is a Sophie Germain prime.

Together with 302026423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 302026393 and 302026402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302026423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151013210 + 151013211.

It is an arithmetic number, because the mean of its divisors is an integer number (151013211).

Almost surely, 2^302026421 is an apocalyptic number.

It is an amenable number.

302026421 is a deficient number, since it is larger than the sum of its proper divisors (1).

302026421 is an equidigital number, since it uses as much as digits as its factorization.

302026421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 302026421 is about 17378.9073592099. The cubic root of 302026421 is about 670.9368500963.

Adding to 302026421 its reverse (124620203), we get a palindrome (426646624).

The spelling of 302026421 in words is "three hundred two million, twenty-six thousand, four hundred twenty-one".