168442456 has 64 divisors (see below), whose sum is σ = 390358080. Its totient is φ = 66355200.

The previous prime is 168442453. The next prime is 168442471. The reversal of 168442456 is 654244861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168442451) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 291640 + ... + 292216.

It is an arithmetic number, because the mean of its divisors is an integer number (6099345).

Almost surely, 2^168442456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168442456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195179040).

168442456 is an abundant number, since it is smaller than the sum of its proper divisors (221915624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168442456 is a wasteful number, since it uses less digits than its factorization.

168442456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 1000 counting only the distinct ones).

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

The square root of 168442456 is about 12978.5382844140. The cubic root of 168442456 is about 552.2688164188.

The spelling of 168442456 in words is "one hundred sixty-eight million, four hundred forty-two thousand, four hundred fifty-six".