42664667 has 2 divisors, whose sum is σ = 42664668. Its totient is φ = 42664666.

The previous prime is 42664651. The next prime is 42664693. The reversal of 42664667 is 76646624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42664667 - 2⁴ = 42664651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42664697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21332333 + 21332334.

It is an arithmetic number, because the mean of its divisors is an integer number (21332334).

Almost surely, 2^42664667 is an apocalyptic number.

42664667 is a deficient number, since it is larger than the sum of its proper divisors (1).

42664667 is an equidigital number, since it uses as much as digits as its factorization.

42664667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 42664667 is about 6531.8195780349. The cubic root of 42664667 is about 349.4267268413.

The spelling of 42664667 in words is "forty-two million, six hundred sixty-four thousand, six hundred sixty-seven".