168424 has 16 divisors (see below), whose sum is σ = 324900. Its totient is φ = 81792.

The previous prime is 168409. The next prime is 168433. The reversal of 168424 is 424861.

168424 = T₂₇ + T₂₈ + ... + T₁₀₀.

It can be written as a sum of positive squares in 2 ways, for example, as 168100 + 324 = 410^2 + 18^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12 + ... + 580.

2¹⁶⁸⁴²⁴ is an apocalyptic number.

It is an amenable number.

168424 is a deficient number, since it is larger than the sum of its proper divisors (156476).

168424 is a wasteful number, since it uses less digits than its factorization.

168424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 168424 is about 410.3949317426. The cubic root of 168424 is about 55.2248645246.

The spelling of 168424 in words is "one hundred sixty-eight thousand, four hundred twenty-four".