168546442 has 16 divisors (see below), whose sum is σ = 262893312. Its totient is φ = 80955360.

The previous prime is 168546439. The next prime is 168546451. The reversal of 168546442 is 244645861.

It is a super-2 number, since 2×168546442² = 56815806221718728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168546395 and 168546404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428 + ... + 18415.

It is an arithmetic number, because the mean of its divisors is an integer number (16430832).

Almost surely, 2^168546442 is an apocalyptic number.

168546442 is a deficient number, since it is larger than the sum of its proper divisors (94346870).

168546442 is a wasteful number, since it uses less digits than its factorization.

168546442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20013.

The product of its digits is 184320, while the sum is 40.

The square root of 168546442 is about 12982.5437415015. The cubic root of 168546442 is about 552.3824386275.

It can be divided in two parts, 16 and 8546442, that added together give a palindrome (8546458).

The spelling of 168546442 in words is "one hundred sixty-eight million, five hundred forty-six thousand, four hundred forty-two".