101442161 has 2 divisors, whose sum is σ = 101442162. Its totient is φ = 101442160.

The previous prime is 101442149. The next prime is 101442217. The reversal of 101442161 is 161244101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000000 + 37442161 = 8000^2 + 6119^2 .

It is a cyclic number.

It is not a de Polignac number, because 101442161 - 2⁶ = 101442097 is a prime.

It is a super-3 number, since 3×101442161³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101442661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50721080 + 50721081.

It is an arithmetic number, because the mean of its divisors is an integer number (50721081).

Almost surely, 2^101442161 is an apocalyptic number.

It is an amenable number.

101442161 is a deficient number, since it is larger than the sum of its proper divisors (1).

101442161 is an equidigital number, since it uses as much as digits as its factorization.

101442161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 101442161 is about 10071.8499293824. The cubic root of 101442161 is about 466.3795482722.

Adding to 101442161 its reverse (161244101), we get a palindrome (262686262).

The spelling of 101442161 in words is "one hundred one million, four hundred forty-two thousand, one hundred sixty-one".