42220349 has 2 divisors, whose sum is σ = 42220350. Its totient is φ = 42220348.

The previous prime is 42220331. The next prime is 42220361. The reversal of 42220349 is 94302224.

42220349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 6160324 = 6005^2 + 2482^2 .

It is a cyclic number.

It is not a de Polignac number, because 42220349 - 2⁸ = 42220093 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 (42220309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21110174 + 21110175.

It is an arithmetic number, because the mean of its divisors is an integer number (21110175).

Almost surely, 2^42220349 is an apocalyptic number.

It is an amenable number.

42220349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42220349 is an equidigital number, since it uses as much as digits as its factorization.

42220349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42220349 is about 6497.7187535319. The cubic root of 42220349 is about 348.2094925921.

The spelling of 42220349 in words is "forty-two million, two hundred twenty thousand, three hundred forty-nine".