642441210423 has 8 divisors (see below), whose sum is σ = 886125807600. Its totient is φ = 413525376768.

The previous prime is 642441210421. The next prime is 642441210427. The reversal of 642441210423 is 324012144246.

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

It is not a de Polignac number, because 642441210423 - 2¹ = 642441210421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642441210421) 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, 3692190778 + ... + 3692190951.

It is an arithmetic number, because the mean of its divisors is an integer number (110765725950).

Almost surely, 2^642441210423 is an apocalyptic number.

642441210423 is a deficient number, since it is larger than the sum of its proper divisors (243684597177).

642441210423 is a wasteful number, since it uses less digits than its factorization.

642441210423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384381761.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 642441210423 its reverse (324012144246), we get a palindrome (966453354669).

The spelling of 642441210423 in words is "six hundred forty-two billion, four hundred forty-one million, two hundred ten thousand, four hundred twenty-three".