142840299 has 8 divisors (see below), whose sum is σ = 217661440. Its totient is φ = 81623016.

The previous prime is 142840289. The next prime is 142840301. The reversal of 142840299 is 992048241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142840299 - 2¹² = 142836203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142840259) 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, 3400939 + ... + 3400980.

It is an arithmetic number, because the mean of its divisors is an integer number (27207680).

Almost surely, 2^142840299 is an apocalyptic number.

142840299 is a deficient number, since it is larger than the sum of its proper divisors (74821141).

142840299 is an equidigital number, since it uses as much as digits as its factorization.

142840299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801929.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 142840299 is about 11951.5814434743. The cubic root of 142840299 is about 522.7374121596.

The spelling of 142840299 in words is "one hundred forty-two million, eight hundred forty thousand, two hundred ninety-nine".