161242106 has 8 divisors (see below), whose sum is σ = 242920020. Its totient is φ = 80268768.

The previous prime is 161242091. The next prime is 161242111. The reversal of 161242106 is 601242161.

It can be written as a sum of positive squares in 2 ways, for example, as 161061481 + 180625 = 12691^2 + 425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175571 + ... + 176486.

Almost surely, 2^161242106 is an apocalyptic number.

161242106 is a deficient number, since it is larger than the sum of its proper divisors (81677914).

161242106 is a wasteful number, since it uses less digits than its factorization.

161242106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352288.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 161242106 is about 12698.1142694496. The cubic root of 161242106 is about 544.2847346098.

Adding to 161242106 its reverse (601242161), we get a palindrome (762484267).

The spelling of 161242106 in words is "one hundred sixty-one million, two hundred forty-two thousand, one hundred six".