142288189 has 8 divisors (see below), whose sum is σ = 150567552. Its totient is φ = 134183280.

The previous prime is 142288187. The next prime is 142288193. The reversal of 142288189 is 981882241.

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 142288189 - 2¹ = 142288187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142288183) 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, 41934 + ... + 45199.

It is an arithmetic number, because the mean of its divisors is an integer number (18820944).

Almost surely, 2^142288189 is an apocalyptic number.

It is an amenable number.

142288189 is a deficient number, since it is larger than the sum of its proper divisors (8279363).

142288189 is an equidigital number, since it uses as much as digits as its factorization.

142288189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87227.

The product of its digits is 73728, while the sum is 43.

The square root of 142288189 is about 11928.4613006037. The cubic root of 142288189 is about 522.0630431827.

The spelling of 142288189 in words is "one hundred forty-two million, two hundred eighty-eight thousand, one hundred eighty-nine".