641140442 has 8 divisors (see below), whose sum is σ = 982172736. Its totient is φ = 313749532.

The previous prime is 641140391. The next prime is 641140447. The reversal of 641140442 is 244041146.

641140442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×641140442² = 822122132735910728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641140447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410228 + ... + 3410415.

It is an arithmetic number, because the mean of its divisors is an integer number (122771592).

Almost surely, 2^641140442 is an apocalyptic number.

641140442 is a deficient number, since it is larger than the sum of its proper divisors (341032294).

641140442 is a wasteful number, since it uses less digits than its factorization.

641140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820692.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 641140442 is about 25320.7512131848. The cubic root of 641140442 is about 862.2854488952.

Adding to 641140442 its reverse (244041146), we get a palindrome (885181588).

The spelling of 641140442 in words is "six hundred forty-one million, one hundred forty thousand, four hundred forty-two".