865527142 has 4 divisors (see below), whose sum is σ = 1298290716. Its totient is φ = 432763570.

The previous prime is 865527139. The next prime is 865527149. The reversal of 865527142 is 241725568.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 865527095 and 865527104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865527149) 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 as a sum of consecutive naturals, namely, 216381784 + ... + 216381787.

It is an arithmetic number, because the mean of its divisors is an integer number (324572679).

Almost surely, 2^865527142 is an apocalyptic number.

865527142 is a deficient number, since it is larger than the sum of its proper divisors (432763574).

865527142 is a wasteful number, since it uses less digits than its factorization.

865527142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432763573.

The product of its digits is 134400, while the sum is 40.

The square root of 865527142 is about 29419.8426576350. The cubic root of 865527142 is about 953.0014552428.

The spelling of 865527142 in words is "eight hundred sixty-five million, five hundred twenty-seven thousand, one hundred forty-two".