168424001 has 4 divisors (see below), whose sum is σ = 168536112. Its totient is φ = 168311892.

The previous prime is 168423979. The next prime is 168424013. The reversal of 168424001 is 100424861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168424001 is a prime.

It is a super-2 number, since 2×168424001² = 56733288225696002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168424031) 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 3 ways as a sum of consecutive naturals, for example, 53771 + ... + 56816.

It is an arithmetic number, because the mean of its divisors is an integer number (42134028).

Almost surely, 2^168424001 is an apocalyptic number.

It is an amenable number.

168424001 is a deficient number, since it is larger than the sum of its proper divisors (112111).

168424001 is a wasteful number, since it uses less digits than its factorization.

168424001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112110.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 168424001 is about 12977.8272834862. The cubic root of 168424001 is about 552.2486463392.

Adding to 168424001 its reverse (100424861), we get a palindrome (268848862).

The spelling of 168424001 in words is "one hundred sixty-eight million, four hundred twenty-four thousand, one".