166242203 has 2 divisors, whose sum is σ = 166242204. Its totient is φ = 166242202.

The previous prime is 166242179. The next prime is 166242211. The reversal of 166242203 is 302242661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166242203 - 2¹⁴ = 166225819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166242253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83121101 + 83121102.

It is an arithmetic number, because the mean of its divisors is an integer number (83121102).

Almost surely, 2^166242203 is an apocalyptic number.

166242203 is a deficient number, since it is larger than the sum of its proper divisors (1).

166242203 is an equidigital number, since it uses as much as digits as its factorization.

166242203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 166242203 is about 12893.4945999911. The cubic root of 166242203 is about 549.8536282671.

Adding to 166242203 its reverse (302242661), we get a palindrome (468484864).

The spelling of 166242203 in words is "one hundred sixty-six million, two hundred forty-two thousand, two hundred three".