142858889 has 8 divisors (see below), whose sum is σ = 145714632. Its totient is φ = 140019840.

The previous prime is 142858879. The next prime is 142858921. The reversal of 142858889 is 988858241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2199289 + 140659600 = 1483^2 + 11860^2 .

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 142858889 - 2²⁰ = 141810313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142858889.

It is not an unprimeable number, because it can be changed into a prime (142858879) 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, 13877 + ... + 21869.

It is an arithmetic number, because the mean of its divisors is an integer number (18214329).

Almost surely, 2^142858889 is an apocalyptic number.

It is an amenable number.

142858889 is a deficient number, since it is larger than the sum of its proper divisors (2855743).

142858889 is an equidigital number, since it uses as much as digits as its factorization.

142858889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347.

The product of its digits is 1474560, while the sum is 53.

The square root of 142858889 is about 11952.3591395172. The cubic root of 142858889 is about 522.7600884562.

The spelling of 142858889 in words is "one hundred forty-two million, eight hundred fifty-eight thousand, eight hundred eighty-nine".