641506242 has 16 divisors (see below), whose sum is σ = 1381705920. Its totient is φ = 197386512.

The previous prime is 641506241. The next prime is 641506249. The reversal of 641506242 is 242605146.

641506242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (641506241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112142 + ... + 4112297.

It is an arithmetic number, because the mean of its divisors is an integer number (86356620).

Almost surely, 2^641506242 is an apocalyptic number.

641506242 is an abundant number, since it is smaller than the sum of its proper divisors (740199678).

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

641506242 is a wasteful number, since it uses less digits than its factorization.

641506242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224457.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 641506242 is about 25327.9735075667. The cubic root of 641506242 is about 862.4494088368.

The spelling of 641506242 in words is "six hundred forty-one million, five hundred six thousand, two hundred forty-two".