67042571 has 2 divisors, whose sum is σ = 67042572. Its totient is φ = 67042570.

The previous prime is 67042541. The next prime is 67042579. The reversal of 67042571 is 17524076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67042571 - 2¹⁰ = 67041547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (67042579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33521285 + 33521286.

It is an arithmetic number, because the mean of its divisors is an integer number (33521286).

Almost surely, 2^67042571 is an apocalyptic number.

67042571 is a deficient number, since it is larger than the sum of its proper divisors (1).

67042571 is an equidigital number, since it uses as much as digits as its factorization.

67042571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 67042571 is about 8187.9527966397. The cubic root of 67042571 is about 406.2408138041.

The spelling of 67042571 in words is "sixty-seven million, forty-two thousand, five hundred seventy-one".