302194421 has 2 divisors, whose sum is σ = 302194422. Its totient is φ = 302194420.

The previous prime is 302194391. The next prime is 302194433. The reversal of 302194421 is 124491203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192238225 + 109956196 = 13865^2 + 10486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302194421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302194021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151097210 + 151097211.

It is an arithmetic number, because the mean of its divisors is an integer number (151097211).

Almost surely, 2^302194421 is an apocalyptic number.

It is an amenable number.

302194421 is a deficient number, since it is larger than the sum of its proper divisors (1).

302194421 is an equidigital number, since it uses as much as digits as its factorization.

302194421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 302194421 is about 17383.7401326642. The cubic root of 302194421 is about 671.0612282853.

The spelling of 302194421 in words is "three hundred two million, one hundred ninety-four thousand, four hundred twenty-one".