685119042 has 12 divisors (see below), whose sum is σ = 1484424630. Its totient is φ = 228373008.

The previous prime is 685119037. The next prime is 685119049. The reversal of 685119042 is 240911586.

It can be written as a sum of positive squares in only one way, i.e., 630964161 + 54154881 = 25119^2 + 7359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 685118988 and 685119006.

It is not an unprimeable number, because it can be changed into a prime (685119049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19031067 + ... + 19031102.

Almost surely, 2^685119042 is an apocalyptic number.

685119042 is an abundant number, since it is smaller than the sum of its proper divisors (799305588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685119042 is a wasteful number, since it uses less digits than its factorization.

685119042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38062177 (or 38062174 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 685119042 is about 26174.7787383198. The cubic root of 685119042 is about 881.5670434322.

The spelling of 685119042 in words is "six hundred eighty-five million, one hundred nineteen thousand, forty-two".