285664042 has 4 divisors (see below), whose sum is σ = 428496066. Its totient is φ = 142832020.

The previous prime is 285664019. The next prime is 285664051. The reversal of 285664042 is 240466582.

285664042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 152053561 + 133610481 = 12331^2 + 11559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 285663992 and 285664010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71416009 + ... + 71416012.

Almost surely, 2^285664042 is an apocalyptic number.

285664042 is a deficient number, since it is larger than the sum of its proper divisors (142832024).

285664042 is a wasteful number, since it uses less digits than its factorization.

285664042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142832023.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 285664042 is about 16901.5988001136. The cubic root of 285664042 is about 658.5951461711.

The spelling of 285664042 in words is "two hundred eighty-five million, six hundred sixty-four thousand, forty-two".