641342442 has 96 divisors (see below), whose sum is σ = 1532426112. Its totient is φ = 177509376.

The previous prime is 641342441. The next prime is 641342479. The reversal of 641342442 is 244243146.

It is a super-2 number, since 2×641342442² = 822640255821046728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641342441) 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, 517848 + ... + 519084.

It is an arithmetic number, because the mean of its divisors is an integer number (15962772).

Almost surely, 2^641342442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641342442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766213056).

641342442 is an abundant number, since it is smaller than the sum of its proper divisors (891083670).

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

641342442 is a wasteful number, since it uses less digits than its factorization.

641342442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1295 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 641342442 is about 25324.7397222558. The cubic root of 641342442 is about 862.3759976319.

Adding to 641342442 its reverse (244243146), we get a palindrome (885585588).

The spelling of 641342442 in words is "six hundred forty-one million, three hundred forty-two thousand, four hundred forty-two".