42201647 has 2 divisors, whose sum is σ = 42201648. Its totient is φ = 42201646.

The previous prime is 42201613. The next prime is 42201661. The reversal of 42201647 is 74610224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42201647 - 2²⁰ = 41153071 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 (42201547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100823 + 21100824.

It is an arithmetic number, because the mean of its divisors is an integer number (21100824).

Almost surely, 2^42201647 is an apocalyptic number.

42201647 is a deficient number, since it is larger than the sum of its proper divisors (1).

42201647 is an equidigital number, since it uses as much as digits as its factorization.

42201647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42201647 is about 6496.2794736680. The cubic root of 42201647 is about 348.1580705024.

The spelling of 42201647 in words is "forty-two million, two hundred one thousand, six hundred forty-seven".