65142287 has 8 divisors (see below), whose sum is σ = 75497472. Its totient is φ = 55049400.

The previous prime is 65142277. The next prime is 65142289. The reversal of 65142287 is 78224156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65142287 - 2⁴ = 65142271 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65039 + ... + 66032.

It is an arithmetic number, because the mean of its divisors is an integer number (9437184).

Almost surely, 2^65142287 is an apocalyptic number.

65142287 is a deficient number, since it is larger than the sum of its proper divisors (10355185).

65142287 is a wasteful number, since it uses less digits than its factorization.

65142287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131149.

The product of its digits is 26880, while the sum is 35.

The square root of 65142287 is about 8071.0771895702. The cubic root of 65142287 is about 402.3657451240.

The spelling of 65142287 in words is "sixty-five million, one hundred forty-two thousand, two hundred eighty-seven".