161042042 has 16 divisors (see below), whose sum is σ = 276251712. Its totient is φ = 68973120.

The previous prime is 161042039. The next prime is 161042051. The reversal of 161042042 is 240240161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27593 + ... + 32915.

It is an arithmetic number, because the mean of its divisors is an integer number (17265732).

Almost surely, 2^161042042 is an apocalyptic number.

161042042 is a deficient number, since it is larger than the sum of its proper divisors (115209670).

161042042 is a wasteful number, since it uses less digits than its factorization.

161042042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 161042042 is about 12690.2341191958. The cubic root of 161042042 is about 544.0595311329.

The spelling of 161042042 in words is "one hundred sixty-one million, forty-two thousand, forty-two".