302420189 has 2 divisors, whose sum is σ = 302420190. Its totient is φ = 302420188.

The previous prime is 302420179. The next prime is 302420263. The reversal of 302420189 is 981024203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205692964 + 96727225 = 14342^2 + 9835^2 .

It is a cyclic number.

It is not a de Polignac number, because 302420189 - 2⁸ = 302419933 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 (302420119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151210094 + 151210095.

It is an arithmetic number, because the mean of its divisors is an integer number (151210095).

Almost surely, 2^302420189 is an apocalyptic number.

It is an amenable number.

302420189 is a deficient number, since it is larger than the sum of its proper divisors (1).

302420189 is an equidigital number, since it uses as much as digits as its factorization.

302420189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 302420189 is about 17390.2325746380. The cubic root of 302420189 is about 671.2283022253.

The spelling of 302420189 in words is "three hundred two million, four hundred twenty thousand, one hundred eighty-nine".