642144103314122 has 8 divisors (see below), whose sum is σ = 963224168844000. Its totient is φ = 321069380366124.

The previous prime is 642144103313887. The next prime is 642144103314143. The reversal of 642144103314122 is 221413301441246.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335344972 + ... + 1335825767.

It is an arithmetic number, because the mean of its divisors is an integer number (120403021105500).

Almost surely, 2^{642144103314122} is an apocalyptic number.

642144103314122 is a deficient number, since it is larger than the sum of its proper divisors (321080065529878).

642144103314122 is a wasteful number, since it uses less digits than its factorization.

642144103314122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671290940.

The product of its (nonzero) digits is 110592, while the sum is 38.

Adding to 642144103314122 its reverse (221413301441246), we get a palindrome (863557404755368).

The spelling of 642144103314122 in words is "six hundred forty-two trillion, one hundred forty-four billion, one hundred three million, three hundred fourteen thousand, one hundred twenty-two".