2108442 has 32 divisors (see below), whose sum is σ = 5104512. Its totient is φ = 566784.

The previous prime is 2108437. The next prime is 2108443. The reversal of 2108442 is 2448012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2108443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763 + ... + 2190.

It is an arithmetic number, because the mean of its divisors is an integer number (159516).

2^2108442 is an apocalyptic number.

2108442 is an abundant number, since it is smaller than the sum of its proper divisors (2996070).

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

2108442 is a wasteful number, since it uses less digits than its factorization.

2108442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2108442 is about 1452.0475198836. The cubic root of 2108442 is about 128.2292846782.

The spelling of 2108442 in words is "two million, one hundred eight thousand, four hundred forty-two".