642212367223 has 8 divisors (see below), whose sum is σ = 733971370880. Its totient is φ = 550456958520.

The previous prime is 642212367191. The next prime is 642212367227. The reversal of 642212367223 is 322763212246.

It is a happy number.

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

It is not a de Polignac number, because 642212367223 - 2⁵ = 642212367191 is a prime.

It is a super-2 number, since 2×642212367223² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642212367227) 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, 504393 + ... + 1240498.

It is an arithmetic number, because the mean of its divisors is an integer number (91746421360).

Almost surely, 2^642212367223 is an apocalyptic number.

642212367223 is a deficient number, since it is larger than the sum of its proper divisors (91759003657).

642212367223 is a wasteful number, since it uses less digits than its factorization.

642212367223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797477.

The product of its digits is 290304, while the sum is 40.

Adding to 642212367223 its reverse (322763212246), we get a palindrome (964975579469).

The spelling of 642212367223 in words is "six hundred forty-two billion, two hundred twelve million, three hundred sixty-seven thousand, two hundred twenty-three".