863042 has 4 divisors (see below), whose sum is σ = 1294566. Its totient is φ = 431520.

The previous prime is 863017. The next prime is 863047. The reversal of 863042 is 240368.

It is a happy number.

It is a Cunningham number, because it is equal to 929²+1.

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., 863041 + 1 = 929^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 862999 and 863017.

It is not an unprimeable number, because it can be changed into a prime (863047) by changing a digit.

863042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215759 + ... + 215762.

2⁸⁶³⁰⁴² is an apocalyptic number.

863042 is a deficient number, since it is larger than the sum of its proper divisors (431524).

863042 is a wasteful number, since it uses less digits than its factorization.

863042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431523.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 863042 is about 929.0005382130. Note that the first 3 decimals coincide. The cubic root of 863042 is about 95.2088480113.

The spelling of 863042 in words is "eight hundred sixty-three thousand, forty-two".