680042 has 8 divisors (see below), whose sum is σ = 1112832. Its totient is φ = 309100.

The previous prime is 680039. The next prime is 680059. The reversal of 680042 is 240086.

680042 is nontrivially palindromic in base 16.

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

It is a junction number, because it is equal to n+sod(n) for n = 679996 and 680023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15434 + ... + 15477.

It is an arithmetic number, because the mean of its divisors is an integer number (139104).

2⁶⁸⁰⁰⁴² is an apocalyptic number.

680042 is a deficient number, since it is larger than the sum of its proper divisors (432790).

680042 is a wasteful number, since it uses less digits than its factorization.

680042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30924.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 680042 is about 824.6465909709. The cubic root of 680042 is about 87.9384038652.

The spelling of 680042 in words is "six hundred eighty thousand, forty-two".