2168442 has 24 divisors (see below), whose sum is σ = 4789044. Its totient is φ = 708864.

The previous prime is 2168437. The next prime is 2168473. The reversal of 2168442 is 2448612.

2168442 is a `hidden beast` number, since 216 + 8 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1929321 + 239121 = 1389^2 + 489^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183 + ... + 2090.

2^2168442 is an apocalyptic number.

2168442 is an abundant number, since it is smaller than the sum of its proper divisors (2620602).

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

2168442 is a wasteful number, since it uses less digits than its factorization.

2168442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2331 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2168442 is about 1472.5630716543. The cubic root of 2168442 is about 129.4342674611.

The spelling of 2168442 in words is "two million, one hundred sixty-eight thousand, four hundred forty-two".