671667042 has 32 divisors (see below), whose sum is σ = 1439508672. Its totient is φ = 208177664.

The previous prime is 671667037. The next prime is 671667053. The reversal of 671667042 is 240766176.

It is a super-2 number, since 2×671667042² = 902273230618059528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31203 + ... + 48134.

It is an arithmetic number, because the mean of its divisors is an integer number (44984646).

Almost surely, 2^671667042 is an apocalyptic number.

671667042 is an abundant number, since it is smaller than the sum of its proper divisors (767841630).

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

671667042 is a wasteful number, since it uses less digits than its factorization.

671667042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79442.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 671667042 is about 25916.5399310942. The cubic root of 671667042 is about 875.7591417839.

The spelling of 671667042 in words is "six hundred seventy-one million, six hundred sixty-seven thousand, forty-two".