2142289 has 8 divisors (see below), whose sum is σ = 2367360. Its totient is φ = 1928256.

The previous prime is 2142281. The next prime is 2142293. The reversal of 2142289 is 9822412.

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 2142289 - 2³ = 2142281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142281) 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 7 ways as a sum of consecutive naturals, for example, 2349 + ... + 3130.

It is an arithmetic number, because the mean of its divisors is an integer number (295920).

2^2142289 is an apocalyptic number.

It is an amenable number.

2142289 is a deficient number, since it is larger than the sum of its proper divisors (225071).

2142289 is a wasteful number, since it uses less digits than its factorization.

2142289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519.

The product of its digits is 2304, while the sum is 28.

The square root of 2142289 is about 1463.6560388288. The cubic root of 2142289 is about 128.9118039860.

The spelling of 2142289 in words is "two million, one hundred forty-two thousand, two hundred eighty-nine".