142859321 has 8 divisors (see below), whose sum is σ = 157982304. Its totient is φ = 128092320.

The previous prime is 142859317. The next prime is 142859323. The reversal of 142859321 is 123958241.

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 142859321 - 2² = 142859317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142859323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88151 + ... + 89756.

It is an arithmetic number, because the mean of its divisors is an integer number (19747788).

Almost surely, 2^142859321 is an apocalyptic number.

142859321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142859321 is a deficient number, since it is larger than the sum of its proper divisors (15122983).

142859321 is a wasteful number, since it uses less digits than its factorization.

142859321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177991.

The product of its digits is 17280, while the sum is 35.

The square root of 142859321 is about 11952.3772112497. The cubic root of 142859321 is about 522.7606153914.

The spelling of 142859321 in words is "one hundred forty-two million, eight hundred fifty-nine thousand, three hundred twenty-one".