641838242 has 8 divisors (see below), whose sum is σ = 963425232. Its totient is φ = 320696500.

The previous prime is 641838227. The next prime is 641838269. The reversal of 641838242 is 242838146.

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

It is a junction number, because it is equal to n+sod(n) for n = 641838196 and 641838205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107684 + ... + 113487.

It is an arithmetic number, because the mean of its divisors is an integer number (120428154).

Almost surely, 2^641838242 is an apocalyptic number.

641838242 is a deficient number, since it is larger than the sum of its proper divisors (321586990).

641838242 is a wasteful number, since it uses less digits than its factorization.

641838242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222624.

The product of its digits is 73728, while the sum is 38.

The square root of 641838242 is about 25334.5266780337. The cubic root of 641838242 is about 862.5981648965.

The spelling of 641838242 in words is "six hundred forty-one million, eight hundred thirty-eight thousand, two hundred forty-two".