287844142 has 16 divisors (see below), whose sum is σ = 436950864. Its totient is φ = 142200000.

The previous prime is 287844133. The next prime is 287844143. The reversal of 287844142 is 241448782.

It is a super-3 number, since 3×287844142³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287844095 and 287844104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287844143) 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, 120217 + ... + 122587.

It is an arithmetic number, because the mean of its divisors is an integer number (27309429).

Almost surely, 2^287844142 is an apocalyptic number.

287844142 is a deficient number, since it is larger than the sum of its proper divisors (149106722).

287844142 is a wasteful number, since it uses less digits than its factorization.

287844142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075.

The product of its digits is 114688, while the sum is 40.

The square root of 287844142 is about 16965.9701166777. The cubic root of 287844142 is about 660.2663005567.

The spelling of 287844142 in words is "two hundred eighty-seven million, eight hundred forty-four thousand, one hundred forty-two".