64242020442 has 16 divisors (see below), whose sum is σ = 130401713952. Its totient is φ = 21094394640.

The previous prime is 64242020431. The next prime is 64242020459. The reversal of 64242020442 is 24402024246.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79902609 + ... + 79903412.

It is an arithmetic number, because the mean of its divisors is an integer number (8150107122).

Almost surely, 2^64242020442 is an apocalyptic number.

64242020442 is an abundant number, since it is smaller than the sum of its proper divisors (66159693510).

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

64242020442 is a wasteful number, since it uses less digits than its factorization.

64242020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159806093.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 64242020442 its reverse (24402024246), we get a palindrome (88644044688).

The spelling of 64242020442 in words is "sixty-four billion, two hundred forty-two million, twenty thousand, four hundred forty-two".