42243667 has 2 divisors, whose sum is σ = 42243668. Its totient is φ = 42243666.

The previous prime is 42243637. The next prime is 42243671. The reversal of 42243667 is 76634224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42243667 is a prime.

It is not a weakly prime, because it can be changed into another prime (42243637) 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, 21121833 + 21121834.

It is an arithmetic number, because the mean of its divisors is an integer number (21121834).

Almost surely, 2^42243667 is an apocalyptic number.

42243667 is a deficient number, since it is larger than the sum of its proper divisors (1).

42243667 is an equidigital number, since it uses as much as digits as its factorization.

42243667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 34.

The square root of 42243667 is about 6499.5128278972. The cubic root of 42243667 is about 348.2735853405.

The spelling of 42243667 in words is "forty-two million, two hundred forty-three thousand, six hundred sixty-seven".