169998042 has 8 divisors (see below), whose sum is σ = 339996096. Its totient is φ = 56666012.

The previous prime is 169998019. The next prime is 169998043. The reversal of 169998042 is 240899961.

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

169998042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 169997982 and 169998000.

It is not an unprimeable number, because it can be changed into a prime (169998043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14166498 + ... + 14166509.

It is an arithmetic number, because the mean of its divisors is an integer number (42499512).

Almost surely, 2^169998042 is an apocalyptic number.

169998042 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.

169998042 is a wasteful number, since it uses less digits than its factorization.

169998042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28333012.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 169998042 is about 13038.3297243167. The cubic root of 169998042 is about 553.9636988730.

The spelling of 169998042 in words is "one hundred sixty-nine million, nine hundred ninety-eight thousand, forty-two".