161002042 has 8 divisors (see below), whose sum is σ = 241581600. Its totient is φ = 80474844.

The previous prime is 161002033. The next prime is 161002057. The reversal of 161002042 is 240200161.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4192 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (30197700).

Almost surely, 2^161002042 is an apocalyptic number.

161002042 is a deficient number, since it is larger than the sum of its proper divisors (80579558).

161002042 is a wasteful number, since it uses less digits than its factorization.

161002042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26180.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 161002042 is about 12688.6580062669. The cubic root of 161002042 is about 544.0144824756.

The spelling of 161002042 in words is "one hundred sixty-one million, two thousand, forty-two".