2142668 has 36 divisors (see below), whose sum is σ = 4357080. Its totient is φ = 918720.

The previous prime is 2142667. The next prime is 2142677. The reversal of 2142668 is 8662412.

It is a self number, because there is not a number n which added to its sum of digits gives 2142668.

It is not an unprimeable number, because it can be changed into a prime (2142667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9080 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (121030).

2^2142668 is an apocalyptic number.

It is an amenable number.

2142668 is an abundant number, since it is smaller than the sum of its proper divisors (2214412).

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

2142668 is a wasteful number, since it uses less digits than its factorization.

2142668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 265 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 2142668 is about 1463.7855034123. The cubic root of 2142668 is about 128.9194056203.

It can be divided in two parts, 214 and 2668, that added together give a palindrome (2882).

The spelling of 2142668 in words is "two million, one hundred forty-two thousand, six hundred sixty-eight".