12285143 has 8 divisors (see below), whose sum is σ = 13538448. Its totient is φ = 11075904.

The previous prime is 12285137. The next prime is 12285167. The reversal of 12285143 is 34158221.

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 12285143 - 2⁴ = 12285127 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 (12285103) 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, 10430 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (1692306).

Almost surely, 2^12285143 is an apocalyptic number.

12285143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12285143 is a deficient number, since it is larger than the sum of its proper divisors (1253305).

12285143 is a wasteful number, since it uses less digits than its factorization.

12285143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22033.

The product of its digits is 1920, while the sum is 26.

The square root of 12285143 is about 3505.0168330552. The cubic root of 12285143 is about 230.7420457179.

The spelling of 12285143 in words is "twelve million, two hundred eighty-five thousand, one hundred forty-three".