161942106 has 8 divisors (see below), whose sum is σ = 323884224. Its totient is φ = 53980700.

The previous prime is 161942101. The next prime is 161942141. The reversal of 161942106 is 601249161.

It is a happy number.

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

161942106 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (161942101) 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 in 3 ways as a sum of consecutive naturals, for example, 13495170 + ... + 13495181.

It is an arithmetic number, because the mean of its divisors is an integer number (40485528).

Almost surely, 2^161942106 is an apocalyptic number.

161942106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161942106 is a wasteful number, since it uses less digits than its factorization.

161942106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26990356.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 161942106 is about 12725.6475670199. The cubic root of 161942106 is about 545.0712316065.

The spelling of 161942106 in words is "one hundred sixty-one million, nine hundred forty-two thousand, one hundred six".