42738667 has 2 divisors, whose sum is σ = 42738668. Its totient is φ = 42738666.

The previous prime is 42738649. The next prime is 42738719. The reversal of 42738667 is 76683724.

It is a happy number.

42738667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42738667 - 2⁷ = 42738539 is a prime.

It is not a weakly prime, because it can be changed into another prime (42738637) 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, 21369333 + 21369334.

It is an arithmetic number, because the mean of its divisors is an integer number (21369334).

Almost surely, 2^42738667 is an apocalyptic number.

42738667 is a deficient number, since it is larger than the sum of its proper divisors (1).

42738667 is an equidigital number, since it uses as much as digits as its factorization.

42738667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 43.

The square root of 42738667 is about 6537.4817016952. The cubic root of 42738667 is about 349.6286319491.

The spelling of 42738667 in words is "forty-two million, seven hundred thirty-eight thousand, six hundred sixty-seven".