42381967 has 2 divisors, whose sum is σ = 42381968. Its totient is φ = 42381966.

The previous prime is 42381953. The next prime is 42381971. The reversal of 42381967 is 76918324.

42381967 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 42381967 - 2⁷ = 42381839 is a prime.

It is a super-2 number, since 2×42381967² = 3592462253578178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42381907) 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, 21190983 + 21190984.

It is an arithmetic number, because the mean of its divisors is an integer number (21190984).

Almost surely, 2^42381967 is an apocalyptic number.

42381967 is a deficient number, since it is larger than the sum of its proper divisors (1).

42381967 is an equidigital number, since it uses as much as digits as its factorization.

42381967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 42381967 is about 6510.1433931980. The cubic root of 42381967 is about 348.6532380588.

The spelling of 42381967 in words is "forty-two million, three hundred eighty-one thousand, nine hundred sixty-seven".