143142209 has 8 divisors (see below), whose sum is σ = 163663488. Its totient is φ = 122639040.

The previous prime is 143142203. The next prime is 143142211. The reversal of 143142209 is 902241341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143142209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143142203) 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, 28409 + ... + 33065.

It is an arithmetic number, because the mean of its divisors is an integer number (20457936).

Almost surely, 2^143142209 is an apocalyptic number.

It is an amenable number.

143142209 is a deficient number, since it is larger than the sum of its proper divisors (20521279).

143142209 is an equidigital number, since it uses as much as digits as its factorization.

143142209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 143142209 is about 11964.2053225444. The cubic root of 143142209 is about 523.1054422682.

The spelling of 143142209 in words is "one hundred forty-three million, one hundred forty-two thousand, two hundred nine".