641234242 has 16 divisors (see below), whose sum is σ = 1055581632. Its totient is φ = 289723120.

The previous prime is 641234233. The next prime is 641234291. The reversal of 641234242 is 242432146.

It is a super-2 number, since 2×641234242² = 822362706226629128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641234242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83593 + ... + 90940.

It is an arithmetic number, because the mean of its divisors is an integer number (65973852).

Almost surely, 2^641234242 is an apocalyptic number.

641234242 is a deficient number, since it is larger than the sum of its proper divisors (414347390).

641234242 is a wasteful number, since it uses less digits than its factorization.

641234242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174713.

The product of its digits is 9216, while the sum is 28.

The square root of 641234242 is about 25322.6033811692. The cubic root of 641234242 is about 862.3274981488.

Adding to 641234242 its reverse (242432146), we get a palindrome (883666388).

The spelling of 641234242 in words is "six hundred forty-one million, two hundred thirty-four thousand, two hundred forty-two".