285888142 has 4 divisors (see below), whose sum is σ = 428832216. Its totient is φ = 142944070.

The previous prime is 285888059. The next prime is 285888157. The reversal of 285888142 is 241888582.

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

It is a super-3 number, since 3×285888142³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 285888092 and 285888101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71472034 + ... + 71472037.

It is an arithmetic number, because the mean of its divisors is an integer number (107208054).

Almost surely, 2^285888142 is an apocalyptic number.

285888142 is a deficient number, since it is larger than the sum of its proper divisors (142944074).

285888142 is a wasteful number, since it uses less digits than its factorization.

285888142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142944073.

The product of its digits is 327680, while the sum is 46.

The square root of 285888142 is about 16908.2270507585. The cubic root of 285888142 is about 658.7673211422.

The spelling of 285888142 in words is "two hundred eighty-five million, eight hundred eighty-eight thousand, one hundred forty-two".