641348442 has 96 divisors (see below), whose sum is σ = 1678465152. Its totient is φ = 179734464.

The previous prime is 641348441. The next prime is 641348459. The reversal of 641348442 is 244843146.

641348442 is a `hidden beast` number, since 641 + 3 + 4 + 8 + 4 + 4 + 2 = 666.

641348442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641348442² = 822655648111654728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641348397 and 641348406.

It is not an unprimeable number, because it can be changed into a prime (641348441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178528 + ... + 182084.

It is an arithmetic number, because the mean of its divisors is an integer number (17484012).

Almost surely, 2^641348442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641348442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839232576).

641348442 is an abundant number, since it is smaller than the sum of its proper divisors (1037116710).

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

641348442 is a wasteful number, since it uses less digits than its factorization.

641348442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 3622 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 641348442 is about 25324.8581832160. The cubic root of 641348442 is about 862.3786869075.

The spelling of 641348442 in words is "six hundred forty-one million, three hundred forty-eight thousand, four hundred forty-two".