670042 has 4 divisors (see below), whose sum is σ = 1005066. Its totient is φ = 335020.

The previous prime is 670039. The next prime is 670049. The reversal of 670042 is 240076.

670042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 657721 + 12321 = 811^2 + 111^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (670049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167509 + ... + 167512.

2⁶⁷⁰⁰⁴² is an apocalyptic number.

670042 is a deficient number, since it is larger than the sum of its proper divisors (335024).

670042 is a wasteful number, since it uses less digits than its factorization.

670042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335023.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 670042 is about 818.5609323685. The cubic root of 670042 is about 87.5052296194.

The spelling of 670042 in words is "six hundred seventy thousand, forty-two".