42345911 has 2 divisors, whose sum is σ = 42345912. Its totient is φ = 42345910.

The previous prime is 42345847. The next prime is 42345917. The reversal of 42345911 is 11954324.

42345911 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 is a cyclic number.

It is not a de Polignac number, because 42345911 - 2⁶ = 42345847 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 (42345917) 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, 21172955 + 21172956.

It is an arithmetic number, because the mean of its divisors is an integer number (21172956).

Almost surely, 2^42345911 is an apocalyptic number.

42345911 is a deficient number, since it is larger than the sum of its proper divisors (1).

42345911 is an equidigital number, since it uses as much as digits as its factorization.

42345911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 42345911 is about 6507.3735869397. The cubic root of 42345911 is about 348.5543390174.

The spelling of 42345911 in words is "forty-two million, three hundred forty-five thousand, nine hundred eleven".