642417063422 has 8 divisors (see below), whose sum is σ = 963906300336. Its totient is φ = 321114963312.

The previous prime is 642417063413. The next prime is 642417063499. The reversal of 642417063422 is 224360714246.

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

It is a self number, because there is not a number n which added to its sum of digits gives 642417063422.

It is a congruent number.

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, 46775618 + ... + 46789349.

It is an arithmetic number, because the mean of its divisors is an integer number (120488287542).

Almost surely, 2^642417063422 is an apocalyptic number.

642417063422 is a deficient number, since it is larger than the sum of its proper divisors (321489236914).

642417063422 is a wasteful number, since it uses less digits than its factorization.

642417063422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93568402.

The product of its (nonzero) digits is 387072, while the sum is 41.

Adding to 642417063422 its reverse (224360714246), we get a palindrome (866777777668).

The spelling of 642417063422 in words is "six hundred forty-two billion, four hundred seventeen million, sixty-three thousand, four hundred twenty-two".