163739042 has 16 divisors (see below), whose sum is σ = 251333280. Its totient is φ = 79978752.

The previous prime is 163739041. The next prime is 163739063. The reversal of 163739042 is 240937361.

It is a junction number, because it is equal to n+sod(n) for n = 163738993 and 163739011.

It is not an unprimeable number, because it can be changed into a prime (163739041) 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 7 ways as a sum of consecutive naturals, for example, 14978 + ... + 23490.

It is an arithmetic number, because the mean of its divisors is an integer number (15708330).

Almost surely, 2^163739042 is an apocalyptic number.

163739042 is a deficient number, since it is larger than the sum of its proper divisors (87594238).

163739042 is a wasteful number, since it uses less digits than its factorization.

163739042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 163739042 is about 12796.0557204164. The cubic root of 163739042 is about 547.0798867757.

The spelling of 163739042 in words is "one hundred sixty-three million, seven hundred thirty-nine thousand, forty-two".