42319019 has 2 divisors, whose sum is σ = 42319020. Its totient is φ = 42319018.

The previous prime is 42318979. The next prime is 42319027. The reversal of 42319019 is 91091324.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42319019 is a prime.

It is a super-2 number, since 2×42319019² = 3581798738244722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42318982 and 42319000.

It is not a weakly prime, because it can be changed into another prime (42319219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21159509 + 21159510.

It is an arithmetic number, because the mean of its divisors is an integer number (21159510).

Almost surely, 2^42319019 is an apocalyptic number.

42319019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42319019 is an equidigital number, since it uses as much as digits as its factorization.

42319019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 42319019 is about 6505.3069873758. The cubic root of 42319019 is about 348.4805396197.

The spelling of 42319019 in words is "forty-two million, three hundred nineteen thousand, nineteen".