285142199 has 4 divisors (see below), whose sum is σ = 285204936. Its totient is φ = 285079464.

The previous prime is 285142189. The next prime is 285142217. The reversal of 285142199 is 991241582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 285142199 - 2¹² = 285138103 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 (285142189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23969 + ... + 33834.

It is an arithmetic number, because the mean of its divisors is an integer number (71301234).

Almost surely, 2^285142199 is an apocalyptic number.

285142199 is a deficient number, since it is larger than the sum of its proper divisors (62737).

285142199 is an equidigital number, since it uses as much as digits as its factorization.

285142199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62736.

The product of its digits is 51840, while the sum is 41.

The square root of 285142199 is about 16886.1540618342. The cubic root of 285142199 is about 658.1938673891.

The spelling of 285142199 in words is "two hundred eighty-five million, one hundred forty-two thousand, one hundred ninety-nine".