267042161 has 2 divisors, whose sum is σ = 267042162. Its totient is φ = 267042160.

The previous prime is 267042107. The next prime is 267042187. The reversal of 267042161 is 161240762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259854400 + 7187761 = 16120^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 267042161 - 2²² = 262847857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (267042661) 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, 133521080 + 133521081.

It is an arithmetic number, because the mean of its divisors is an integer number (133521081).

Almost surely, 2^267042161 is an apocalyptic number.

It is an amenable number.

267042161 is a deficient number, since it is larger than the sum of its proper divisors (1).

267042161 is an equidigital number, since it uses as much as digits as its factorization.

267042161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 267042161 is about 16341.4246930921. The cubic root of 267042161 is about 643.9615612064.

The spelling of 267042161 in words is "two hundred sixty-seven million, forty-two thousand, one hundred sixty-one".