642443142033 has 24 divisors (see below), whose sum is σ = 1156953884736. Its totient is φ = 333736696800.

The previous prime is 642443141971. The next prime is 642443142043. The reversal of 642443142033 is 330241344246.

642443142033 is a `hidden beast` number, since 6 + 4 + 2 + 443 + 1 + 4 + 203 + 3 = 666.

It is not a de Polignac number, because 642443142033 - 2⁸ = 642443141777 is a prime.

It is a super-2 number, since 2×642443142033² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642443142043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463522498 + ... + 463523883.

It is an arithmetic number, because the mean of its divisors is an integer number (48206411864).

Almost surely, 2^642443142033 is an apocalyptic number.

642443142033 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

642443142033 is a deficient number, since it is larger than the sum of its proper divisors (514510742703).

642443142033 is a wasteful number, since it uses less digits than its factorization.

642443142033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927046405 (or 927046402 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 642443142033 its reverse (330241344246), we get a palindrome (972684486279).

The spelling of 642443142033 in words is "six hundred forty-two billion, four hundred forty-three million, one hundred forty-two thousand, thirty-three".