168143004 has 18 divisors (see below), whose sum is σ = 425028240. Its totient is φ = 56047656.

The previous prime is 168142991. The next prime is 168143057. The reversal of 168143004 is 400341861.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2335284 + ... + 2335355.

It is an arithmetic number, because the mean of its divisors is an integer number (23612680).

Almost surely, 2^168143004 is an apocalyptic number.

It is an amenable number.

168143004 is an abundant number, since it is smaller than the sum of its proper divisors (256885236).

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

168143004 is a wasteful number, since it uses less digits than its factorization.

168143004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670649 (or 4670644 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 168143004 is about 12966.9967224489. The cubic root of 168143004 is about 551.9413532527.

Adding to 168143004 its reverse (400341861), we get a palindrome (568484865).

The spelling of 168143004 in words is "one hundred sixty-eight million, one hundred forty-three thousand, four".