2142889 has 8 divisors (see below), whose sum is σ = 2472768. Its totient is φ = 1818960.

The previous prime is 2142883. The next prime is 2142911. The reversal of 2142889 is 9882412.

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 2142889 - 2⁵ = 2142857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (309096).

2^2142889 is an apocalyptic number.

It is an amenable number.

2142889 is a deficient number, since it is larger than the sum of its proper divisors (329879).

2142889 is a wasteful number, since it uses less digits than its factorization.

2142889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975.

The product of its digits is 9216, while the sum is 34.

The square root of 2142889 is about 1463.8609906682. The cubic root of 2142889 is about 128.9238378218.

The spelling of 2142889 in words is "two million, one hundred forty-two thousand, eight hundred eighty-nine".