642443141542 has 8 divisors (see below), whose sum is σ = 964722524832. Its totient is φ = 320868966600.

The previous prime is 642443141503. The next prime is 642443141551. The reversal of 642443141542 is 245141344246.

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

It is a super-2 number, since 2×642443141542² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642443141495 and 642443141504.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 176299809 + ... + 176303452.

It is an arithmetic number, because the mean of its divisors is an integer number (120590315604).

Almost surely, 2^642443141542 is an apocalyptic number.

642443141542 is a deficient number, since it is larger than the sum of its proper divisors (322279383290).

642443141542 is a wasteful number, since it uses less digits than its factorization.

642443141542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352604174.

The product of its digits is 368640, while the sum is 40.

Adding to 642443141542 its reverse (245141344246), we get a palindrome (887584485788).

The spelling of 642443141542 in words is "six hundred forty-two billion, four hundred forty-three million, one hundred forty-one thousand, five hundred forty-two".