642112264269 has 12 divisors (see below), whose sum is σ = 1059994849056. Its totient is φ = 366921293832.

The previous prime is 642112264247. The next prime is 642112264331. The reversal of 642112264269 is 962462211246.

It is a happy number.

642112264269 is a `hidden beast` number, since 6 + 4 + 211 + 2 + 2 + 6 + 426 + 9 = 666.

It is not a de Polignac number, because 642112264269 - 2¹¹ = 642112262221 is a prime.

It is a super-2 number, since 2×642112264269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642112264219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5096129019 + ... + 5096129144.

It is an arithmetic number, because the mean of its divisors is an integer number (88332904088).

Almost surely, 2^642112264269 is an apocalyptic number.

It is an amenable number.

642112264269 is a deficient number, since it is larger than the sum of its proper divisors (417882584787).

642112264269 is a wasteful number, since it uses less digits than its factorization.

642112264269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192258176 (or 10192258173 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 642112264269 in words is "six hundred forty-two billion, one hundred twelve million, two hundred sixty-four thousand, two hundred sixty-nine".