42323219 has 2 divisors, whose sum is σ = 42323220. Its totient is φ = 42323218.

The previous prime is 42323207. The next prime is 42323221. The reversal of 42323219 is 91232324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42323219 - 2⁸ = 42322963 is a prime.

It is a super-2 number, since 2×42323219² = 3582509733043922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 42323221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42323249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21161609 + 21161610.

It is an arithmetic number, because the mean of its divisors is an integer number (21161610).

Almost surely, 2^42323219 is an apocalyptic number.

42323219 is a deficient number, since it is larger than the sum of its proper divisors (1).

42323219 is an equidigital number, since it uses as much as digits as its factorization.

42323219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 42323219 is about 6505.6297927257. The cubic root of 42323219 is about 348.4920676897.

It can be divided in two parts, 423232 and 19, that multiplied together give a palindrome (8041408).

The spelling of 42323219 in words is "forty-two million, three hundred twenty-three thousand, two hundred nineteen".