42567197 has 2 divisors, whose sum is σ = 42567198. Its totient is φ = 42567196.

The previous prime is 42567191. The next prime is 42567199. The reversal of 42567197 is 79176524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23609881 + 18957316 = 4859^2 + 4354^2 .

It is a cyclic number.

It is not a de Polignac number, because 42567197 - 2⁸ = 42566941 is a prime.

Together with 42567199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42567191) 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, 21283598 + 21283599.

It is an arithmetic number, because the mean of its divisors is an integer number (21283599).

Almost surely, 2^42567197 is an apocalyptic number.

It is an amenable number.

42567197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42567197 is an equidigital number, since it uses as much as digits as its factorization.

42567197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 42567197 is about 6524.3541442813. The cubic root of 42567197 is about 349.1604284829.

The spelling of 42567197 in words is "forty-two million, five hundred sixty-seven thousand, one hundred ninety-seven".