641200120 has 32 divisors (see below), whose sum is σ = 1573855920. Its totient is φ = 233163520.

The previous prime is 641200111. The next prime is 641200129. The reversal of 641200120 is 21002146.

It is an interprime number because it is at equal distance from previous prime (641200111) and next prime (641200129).

It is a super-2 number, since 2×641200120² = 822275187776028800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641200094 and 641200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641200129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728197 + ... + 729076.

Almost surely, 2^641200120 is an apocalyptic number.

It is an amenable number.

641200120 is an abundant number, since it is smaller than the sum of its proper divisors (932655800).

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

641200120 is a wasteful number, since it uses less digits than its factorization.

641200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457295 (or 1457291 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 641200120 is about 25321.9296263140. The cubic root of 641200120 is about 862.3122021987.

Adding to 641200120 its reverse (21002146), we get a palindrome (662202266).

The spelling of 641200120 in words is "six hundred forty-one million, two hundred thousand, one hundred twenty".