2142091 has 8 divisors (see below), whose sum is σ = 2472704. Its totient is φ = 1817640.

The previous prime is 2142083. The next prime is 2142097. The reversal of 2142091 is 1902412.

2142091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2142091 - 2³ = 2142083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142097) 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 7 ways as a sum of consecutive naturals, for example, 765 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (309088).

2^2142091 is an apocalyptic number.

2142091 is a deficient number, since it is larger than the sum of its proper divisors (330613).

2142091 is a wasteful number, since it uses less digits than its factorization.

2142091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2142091 is about 1463.5883984235. The cubic root of 2142091 is about 128.9078323271.

The spelling of 2142091 in words is "two million, one hundred forty-two thousand, ninety-one".