12785143 has 8 divisors (see below), whose sum is σ = 15115680. Its totient is φ = 10580640.

The previous prime is 12785131. The next prime is 12785189. The reversal of 12785143 is 34158721.

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

It is not a de Polignac number, because 12785143 - 2²¹ = 10687991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780143) 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, 31288 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (1889460).

Almost surely, 2^12785143 is an apocalyptic number.

12785143 is a deficient number, since it is larger than the sum of its proper divisors (2330537).

12785143 is an equidigital number, since it uses as much as digits as its factorization.

12785143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63017.

The product of its digits is 6720, while the sum is 31.

The square root of 12785143 is about 3575.6318322780. The cubic root of 12785143 is about 233.8308795775.

The spelling of 12785143 in words is "twelve million, seven hundred eighty-five thousand, one hundred forty-three".