42339419 has 2 divisors, whose sum is σ = 42339420. Its totient is φ = 42339418.

The previous prime is 42339373. The next prime is 42339431. The reversal of 42339419 is 91493324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42339419 is a prime.

It is a super-2 number, since 2×42339419² = 3585252802515122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42339119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21169709 + 21169710.

It is an arithmetic number, because the mean of its divisors is an integer number (21169710).

Almost surely, 2^42339419 is an apocalyptic number.

42339419 is a deficient number, since it is larger than the sum of its proper divisors (1).

42339419 is an equidigital number, since it uses as much as digits as its factorization.

42339419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 42339419 is about 6506.8747490635. The cubic root of 42339419 is about 348.5365259601.

The spelling of 42339419 in words is "forty-two million, three hundred thirty-nine thousand, four hundred nineteen".