42220319 has 2 divisors, whose sum is σ = 42220320. Its totient is φ = 42220318.

The previous prime is 42220309. The next prime is 42220331. The reversal of 42220319 is 91302224.

42220319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42220319 - 2²⁰ = 41171743 is a prime.

It is a super-2 number, since 2×42220319² = 3565110672923522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 42220294 and 42220303.

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, 21110159 + 21110160.

It is an arithmetic number, because the mean of its divisors is an integer number (21110160).

Almost surely, 2^42220319 is an apocalyptic number.

42220319 is a deficient number, since it is larger than the sum of its proper divisors (1).

42220319 is an equidigital number, since it uses as much as digits as its factorization.

42220319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42220319 is about 6497.7164450290. The cubic root of 42220319 is about 348.2094101178.

The spelling of 42220319 in words is "forty-two million, two hundred twenty thousand, three hundred nineteen".