166042337 has 2 divisors, whose sum is σ = 166042338. Its totient is φ = 166042336.

The previous prime is 166042321. The next prime is 166042351. The reversal of 166042337 is 733240661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137569441 + 28472896 = 11729^2 + 5336^2 .

It is an emirp because it is prime and its reverse (733240661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166042337 - 2⁴ = 166042321 is a prime.

It is a super-3 number, since 3×166042337³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166042367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83021168 + 83021169.

It is an arithmetic number, because the mean of its divisors is an integer number (83021169).

Almost surely, 2^166042337 is an apocalyptic number.

It is an amenable number.

166042337 is a deficient number, since it is larger than the sum of its proper divisors (1).

166042337 is an equidigital number, since it uses as much as digits as its factorization.

166042337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 166042337 is about 12885.7416162206. The cubic root of 166042337 is about 549.6331846127.

Adding to 166042337 its reverse (733240661), we get a palindrome (899282998).

The spelling of 166042337 in words is "one hundred sixty-six million, forty-two thousand, three hundred thirty-seven".