142144589 has 4 divisors (see below), whose sum is σ = 142179420. Its totient is φ = 142109760.

The previous prime is 142144571. The next prime is 142144603. The reversal of 142144589 is 985441241.

142144589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63520900 + 78623689 = 7970^2 + 8867^2 .

It is a cyclic number.

It is not a de Polignac number, because 142144589 - 2⁸ = 142144333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10334 + ... + 19775.

It is an arithmetic number, because the mean of its divisors is an integer number (35544855).

Almost surely, 2^142144589 is an apocalyptic number.

It is an amenable number.

142144589 is a deficient number, since it is larger than the sum of its proper divisors (34831).

142144589 is an equidigital number, since it uses as much as digits as its factorization.

142144589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34830.

The product of its digits is 46080, while the sum is 38.

The square root of 142144589 is about 11922.4405639114. The cubic root of 142144589 is about 521.8873586852.

The spelling of 142144589 in words is "one hundred forty-two million, one hundred forty-four thousand, five hundred eighty-nine".