302042381 has 2 divisors, whose sum is σ = 302042382. Its totient is φ = 302042380.

The previous prime is 302042369. The next prime is 302042387. The reversal of 302042381 is 183240203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300328900 + 1713481 = 17330^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 302042381 - 2⁶ = 302042317 is a prime.

It is a super-2 number, since 2×302042381² = 182459199840298322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302042387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151021190 + 151021191.

It is an arithmetic number, because the mean of its divisors is an integer number (151021191).

Almost surely, 2^302042381 is an apocalyptic number.

It is an amenable number.

302042381 is a deficient number, since it is larger than the sum of its proper divisors (1).

302042381 is an equidigital number, since it uses as much as digits as its factorization.

302042381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 302042381 is about 17379.3665304579. The cubic root of 302042381 is about 670.9486680066.

Adding to 302042381 its reverse (183240203), we get a palindrome (485282584).

The spelling of 302042381 in words is "three hundred two million, forty-two thousand, three hundred eighty-one".