641120 has 24 divisors (see below), whose sum is σ = 1515024. Its totient is φ = 256384.

The previous prime is 641101. The next prime is 641129. The reversal of 641120 is 21146.

It is a super-2 number, since 2×641120² = 822069708800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641095 and 641104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641129) by changing a digit.

641120 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (63126).

2⁶⁴¹¹²⁰ is an apocalyptic number.

It is an amenable number.

641120 is an abundant number, since it is smaller than the sum of its proper divisors (873904).

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

641120 is a wasteful number, since it uses less digits than its factorization.

641120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022 (or 4014 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 641120 is about 800.6996940177. The cubic root of 641120 is about 86.2276284483.

Adding to 641120 its reverse (21146), we get a palindrome (662266).

The spelling of 641120 in words is "six hundred forty-one thousand, one hundred twenty".