671139242 has 8 divisors (see below), whose sum is σ = 1059693600. Its totient is φ = 317908044.

The previous prime is 671139233. The next prime is 671139289. The reversal of 671139242 is 242931176.

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

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, 8830742 + ... + 8830817.

It is an arithmetic number, because the mean of its divisors is an integer number (132461700).

Almost surely, 2^671139242 is an apocalyptic number.

671139242 is a deficient number, since it is larger than the sum of its proper divisors (388554358).

671139242 is a wasteful number, since it uses less digits than its factorization.

671139242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17661580.

The product of its digits is 18144, while the sum is 35.

The square root of 671139242 is about 25906.3552434533. The cubic root of 671139242 is about 875.5296894053.

The spelling of 671139242 in words is "six hundred seventy-one million, one hundred thirty-nine thousand, two hundred forty-two".