671143120 has 80 divisors (see below), whose sum is σ = 1593862272. Its totient is φ = 262760960.

The previous prime is 671143079. The next prime is 671143139. The reversal of 671143120 is 21341176.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982299 + ... + 982981.

Almost surely, 2^671143120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671143120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796931136).

671143120 is an abundant number, since it is smaller than the sum of its proper divisors (922719152).

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

671143120 is a wasteful number, since it uses less digits than its factorization.

671143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 671143120 is about 25906.4300898445. The cubic root of 671143120 is about 875.5313757407.

Adding to 671143120 its reverse (21341176), we get a palindrome (692484296).

The spelling of 671143120 in words is "six hundred seventy-one million, one hundred forty-three thousand, one hundred twenty".